22 Sep
2005
22 Sep
'05
11:06 a.m.
In our discussion, we have seen 3x3 and 4x4 examples. I have found a 5x5 example in Dudeney, with an interesting and easy-to-use method for even orders. Its first row: 54 / 648 / 1 / 12 / 144 giving the magic product 60,466,176. Because the Dudeney's square is associative, this magic product = 36^5 (the center cell is 36). Christian.