Put number 1 in the middle of the top row. Put the numbers 2 up to n (= lenght of the square) each time (using a chess knight movement) 1 cell to the right and 2 cells down. Put number n+1 below number n. Put the number n+2 up to 2n each time 1 cell to the right and 2 cells down. Put number 2n+1 below number 2n. Etcetera ...
1 | ||||||||||||
8 | ||||||||||||
2 | ||||||||||||
9 | ||||||||||||
3 | ||||||||||||
10 | ||||||||||||
4 | ||||||||||||
11 | ||||||||||||
5 | ||||||||||||
12 | ||||||||||||
6 | ||||||||||||
13 | ||||||||||||
14 | 7 |
13x13 symmetric magic square
163 | 136 | 109 | 82 | 55 | 28 | 1 | 156 | 129 | 102 | 75 | 48 | 21 |
8 | 150 | 123 | 96 | 69 | 42 | 15 | 157 | 143 | 116 | 89 | 62 | 35 |
22 | 164 | 137 | 110 | 83 | 56 | 29 | 2 | 144 | 130 | 103 | 76 | 49 |
36 | 9 | 151 | 124 | 97 | 70 | 43 | 16 | 158 | 131 | 117 | 90 | 63 |
50 | 23 | 165 | 138 | 111 | 84 | 57 | 30 | 3 | 145 | 118 | 104 | 77 |
64 | 37 | 10 | 152 | 125 | 98 | 71 | 44 | 17 | 159 | 132 | 105 | 91 |
78 | 51 | 24 | 166 | 139 | 112 | 85 | 58 | 31 | 4 | 146 | 119 | 92 |
79 | 65 | 38 | 11 | 153 | 126 | 99 | 72 | 45 | 18 | 160 | 133 | 106 |
93 | 66 | 52 | 25 | 167 | 140 | 113 | 86 | 59 | 32 | 5 | 147 | 120 |
107 | 80 | 53 | 39 | 12 | 154 | 127 | 100 | 73 | 46 | 19 | 161 | 134 |
121 | 94 | 67 | 40 | 26 | 168 | 141 | 114 | 87 | 60 | 33 | 6 | 148 |
135 | 108 | 81 | 54 | 27 | 13 | 155 | 128 | 101 | 74 | 47 | 20 | 162 |
149 | 122 | 95 | 68 | 41 | 14 | 169 | 142 | 115 | 88 | 61 | 34 | 7 |
You can use this method to construct magic squares of odd order from 3x3 to infinite and you get a symmetric (but not pan)magic square.
See 3x3, 5x5, 7x7, 9x9, 11x11, 13x13, 15x15, 17x17, 19x19, 21x21, 23x23, 25x25, 27x27, 29x29 and 31x31