Take a number from a grid with 5x5 the same 4x4 magic square and add 16x [number -/- 1] from the grid with the '4x4 blown up' 5x5 magic square.
1x number
1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 |
14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 |
4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 |
15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 |
1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 |
14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 |
4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 |
15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 |
1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 |
14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 |
4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 |
15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 |
1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 |
14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 |
4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 |
15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 |
1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 | 1 | 8 | 13 | 12 |
14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 | 14 | 11 | 2 | 7 |
4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 | 4 | 5 | 16 | 9 |
15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 | 15 | 10 | 3 | 6 |
+ 16x [number -/- 1]
1 | 1 | 1 | 1 | 15 | 15 | 15 | 15 | 22 | 22 | 22 | 22 | 18 | 18 | 18 | 18 | 9 | 9 | 9 | 9 |
1 | 1 | 1 | 1 | 15 | 15 | 15 | 15 | 22 | 22 | 22 | 22 | 18 | 18 | 18 | 18 | 9 | 9 | 9 | 9 |
1 | 1 | 1 | 1 | 15 | 15 | 15 | 15 | 22 | 22 | 22 | 22 | 18 | 18 | 18 | 18 | 9 | 9 | 9 | 9 |
1 | 1 | 1 | 1 | 15 | 15 | 15 | 15 | 22 | 22 | 22 | 22 | 18 | 18 | 18 | 18 | 9 | 9 | 9 | 9 |
23 | 23 | 23 | 23 | 19 | 19 | 19 | 19 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 12 | 12 | 12 | 12 |
23 | 23 | 23 | 23 | 19 | 19 | 19 | 19 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 12 | 12 | 12 | 12 |
23 | 23 | 23 | 23 | 19 | 19 | 19 | 19 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 12 | 12 | 12 | 12 |
23 | 23 | 23 | 23 | 19 | 19 | 19 | 19 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 12 | 12 | 12 | 12 |
10 | 10 | 10 | 10 | 2 | 2 | 2 | 2 | 13 | 13 | 13 | 13 | 24 | 24 | 24 | 24 | 16 | 16 | 16 | 16 |
10 | 10 | 10 | 10 | 2 | 2 | 2 | 2 | 13 | 13 | 13 | 13 | 24 | 24 | 24 | 24 | 16 | 16 | 16 | 16 |
10 | 10 | 10 | 10 | 2 | 2 | 2 | 2 | 13 | 13 | 13 | 13 | 24 | 24 | 24 | 24 | 16 | 16 | 16 | 16 |
10 | 10 | 10 | 10 | 2 | 2 | 2 | 2 | 13 | 13 | 13 | 13 | 24 | 24 | 24 | 24 | 16 | 16 | 16 | 16 |
14 | 14 | 14 | 14 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 7 | 7 | 7 | 7 | 3 | 3 | 3 | 3 |
14 | 14 | 14 | 14 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 7 | 7 | 7 | 7 | 3 | 3 | 3 | 3 |
14 | 14 | 14 | 14 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 7 | 7 | 7 | 7 | 3 | 3 | 3 | 3 |
14 | 14 | 14 | 14 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 7 | 7 | 7 | 7 | 3 | 3 | 3 | 3 |
17 | 17 | 17 | 17 | 8 | 8 | 8 | 8 | 4 | 4 | 4 | 4 | 11 | 11 | 11 | 11 | 25 | 25 | 25 | 25 |
17 | 17 | 17 | 17 | 8 | 8 | 8 | 8 | 4 | 4 | 4 | 4 | 11 | 11 | 11 | 11 | 25 | 25 | 25 | 25 |
17 | 17 | 17 | 17 | 8 | 8 | 8 | 8 | 4 | 4 | 4 | 4 | 11 | 11 | 11 | 11 | 25 | 25 | 25 | 25 |
17 | 17 | 17 | 17 | 8 | 8 | 8 | 8 | 4 | 4 | 4 | 4 | 11 | 11 | 11 | 11 | 25 | 25 | 25 | 25 |
= (panmagic) 20x20 square
1 | 8 | 13 | 12 | 225 | 232 | 237 | 236 | 337 | 344 | 349 | 348 | 273 | 280 | 285 | 284 | 129 | 136 | 141 | 140 |
14 | 11 | 2 | 7 | 238 | 235 | 226 | 231 | 350 | 347 | 338 | 343 | 286 | 283 | 274 | 279 | 142 | 139 | 130 | 135 |
4 | 5 | 16 | 9 | 228 | 229 | 240 | 233 | 340 | 341 | 352 | 345 | 276 | 277 | 288 | 281 | 132 | 133 | 144 | 137 |
15 | 10 | 3 | 6 | 239 | 234 | 227 | 230 | 351 | 346 | 339 | 342 | 287 | 282 | 275 | 278 | 143 | 138 | 131 | 134 |
353 | 360 | 365 | 364 | 289 | 296 | 301 | 300 | 81 | 88 | 93 | 92 | 65 | 72 | 77 | 76 | 177 | 184 | 189 | 188 |
366 | 363 | 354 | 359 | 302 | 299 | 290 | 295 | 94 | 91 | 82 | 87 | 78 | 75 | 66 | 71 | 190 | 187 | 178 | 183 |
356 | 357 | 368 | 361 | 292 | 293 | 304 | 297 | 84 | 85 | 96 | 89 | 68 | 69 | 80 | 73 | 180 | 181 | 192 | 185 |
367 | 362 | 355 | 358 | 303 | 298 | 291 | 294 | 95 | 90 | 83 | 86 | 79 | 74 | 67 | 70 | 191 | 186 | 179 | 182 |
145 | 152 | 157 | 156 | 17 | 24 | 29 | 28 | 193 | 200 | 205 | 204 | 369 | 376 | 381 | 380 | 241 | 248 | 253 | 252 |
158 | 155 | 146 | 151 | 30 | 27 | 18 | 23 | 206 | 203 | 194 | 199 | 382 | 379 | 370 | 375 | 254 | 251 | 242 | 247 |
148 | 149 | 160 | 153 | 20 | 21 | 32 | 25 | 196 | 197 | 208 | 201 | 372 | 373 | 384 | 377 | 244 | 245 | 256 | 249 |
159 | 154 | 147 | 150 | 31 | 26 | 19 | 22 | 207 | 202 | 195 | 198 | 383 | 378 | 371 | 374 | 255 | 250 | 243 | 246 |
209 | 216 | 221 | 220 | 321 | 328 | 333 | 332 | 305 | 312 | 317 | 316 | 97 | 104 | 109 | 108 | 33 | 40 | 45 | 44 |
222 | 219 | 210 | 215 | 334 | 331 | 322 | 327 | 318 | 315 | 306 | 311 | 110 | 107 | 98 | 103 | 46 | 43 | 34 | 39 |
212 | 213 | 224 | 217 | 324 | 325 | 336 | 329 | 308 | 309 | 320 | 313 | 100 | 101 | 112 | 105 | 36 | 37 | 48 | 41 |
223 | 218 | 211 | 214 | 335 | 330 | 323 | 326 | 319 | 314 | 307 | 310 | 111 | 106 | 99 | 102 | 47 | 42 | 35 | 38 |
257 | 264 | 269 | 268 | 113 | 120 | 125 | 124 | 49 | 56 | 61 | 60 | 161 | 168 | 173 | 172 | 385 | 392 | 397 | 396 |
270 | 267 | 258 | 263 | 126 | 123 | 114 | 119 | 62 | 59 | 50 | 55 | 174 | 171 | 162 | 167 | 398 | 395 | 386 | 391 |
260 | 261 | 272 | 265 | 116 | 117 | 128 | 121 | 52 | 53 | 64 | 57 | 164 | 165 | 176 | 169 | 388 | 389 | 400 | 393 |
271 | 266 | 259 | 262 | 127 | 122 | 115 | 118 | 63 | 58 | 51 | 54 | 175 | 170 | 163 | 166 | 399 | 394 | 387 | 390 |
I have used method composite, simple to construct
9x9, 12x12, 15x15a, 15x15b, 18x18, 20x20, 21x21a, 21x21b, 24x24a, 24x24b, 25x25, 27x27a, 27x27b, 28x28, 30x30a, 30x30b