Ultra 21x21 in 23x23 magic square (1)

Take a panmagic 21x21 square and add 44 to all numbers, so in the 21x21 inlay are the 441 middle numbers from 45 up to 485.

In the border are the 44 lowest (1 up to 44) and the 44 highest (486 up to 529) numbers. Read the explanation on webpage 3x3 in 5x5 & concentric, how to construct the border.

See in the download below how the 23x23 border has been constructed or use the download to puzzle your own border.

The result is:

Ultra 21x21 in 23x23 magic square

24	44	41	40	38	37	34	32	31	23	21	508	510	513	514	517	518	521	522	525	526	528	28
487	45	148	329	444	421	245	213	64	140	318	463	413	234	232	56	129	337	455	402	253	224	43
488	427	378	347	259	189	158	91	441	368	343	273	179	154	105	431	364	357	263	175	168	95	42
491	310	290	111	79	206	384	478	311	279	121	80	195	394	479	300	289	122	69	205	395	468	39
494	60	139	323	459	412	239	228	55	134	333	454	407	249	223	50	144	328	449	417	244	218	36
495	440	366	346	272	177	157	104	429	367	356	261	178	167	93	430	377	345	262	188	156	94	35
497	309	278	124	78	194	397	477	299	292	120	68	208	393	467	313	288	110	82	204	383	481	33
500	54	130	338	453	403	254	222	46	149	327	445	422	243	214	65	138	319	464	411	235	233	30
501	423	379	350	255	190	161	87	442	371	339	274	182	150	106	434	360	358	266	171	169	98	29
503	301	294	116	70	210	389	469	315	284	112	84	200	385	483	305	280	126	74	196	399	473	27
504	58	143	321	457	416	237	226	59	132	331	458	405	247	227	48	142	332	447	415	248	216	26
505	438	370	344	270	181	155	102	433	365	354	265	176	165	97	428	375	349	260	186	160	92	25
19	314	282	115	83	198	388	482	303	283	125	72	199	398	471	304	293	114	73	209	387	472	511
18	57	131	334	456	404	250	225	47	145	330	446	418	246	215	61	141	320	460	414	236	229	512
15	432	361	359	264	172	170	96	424	380	348	256	191	159	88	443	369	340	275	180	151	107	515
14	297	295	119	66	211	392	465	316	287	108	85	203	381	484	308	276	127	77	192	400	476	516
11	49	147	326	448	420	242	217	63	137	322	462	410	238	231	53	133	336	452	406	252	221	519
10	436	374	342	268	185	153	100	437	363	352	269	174	163	101	426	373	353	258	184	164	90	520
7	312	286	113	81	202	386	480	307	281	123	76	197	396	475	302	291	118	71	207	391	470	523
6	62	135	325	461	408	241	230	51	136	335	450	409	251	219	52	146	324	451	419	240	220	524
3	435	362	355	267	173	166	99	425	376	351	257	187	162	89	439	372	341	271	183	152	103	527
1	306	277	128	75	193	401	474	298	296	117	67	212	390	466	317	285	109	86	201	382	485	529
502	486	489	490	492	493	496	498	499	507	509	22	20	17	16	13	12	9	8	5	4	2	506

You can use this method to construct magic squares of odd order from 5x5 to infinity. See on this website 5x5, 7x7, 9x9, 11x11, 13x13, 15x15, 17x17, 19x19, 21x21, 23x23, 25x25, 27x27, 29x29 & 31x31

23x23 magic square