Strachey method for magic squares
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The Strachey method for magic squares is an algorithm for generating magic squares of order 4n+2.
Example of magic square of order 6 constructed with the Strachey method:
example 35 1 6 26 19 24 3 32 7 21 23 25 31 9 2 22 27 20 8 28 33 17 10 15 30 5 34 12 14 16 4 36 29 13 18 11