H. E. Dudeney, Amusements in Mathematics (1917) No. 411 · Puzzles · Magic squares
A Magic Square of Composites
As we have just discussed the construction of magic squares with prime numbers, the following forms an interesting companion problem. Make a magic square with nine consecutive composite numbers--the smallest possible.
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H. E. Dudeney, Amusements in Mathematics (1917) · No. 411
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