1,1

Christian Boyer, Smallest multiplicative magic squares, 6th and 7th-order .

Here is a 7 X 7 multiplicative magic square:

11 27 1 64 60 49 65

52 35 36 55 2 12 42

28 48 39 10 70 33 3

25 44 56 9 18 26 14

6 5 77 78 84 8 30

63 4 40 21 13 20 66

24 91 15 7 22 45 16

The magic product of each row, column or diagonal is 3632428800.

Cf. A111029, A111030, A111031.

Sequence in context: A017506 A017638 A159301 this_sequence A094722 A061441 A135915

Adjacent sequences: A113024 A113025 A113026 this_sequence A113028 A113029 A113030

nonn

Christian Boyer (cboyer(AT)club-internet.fr), Jan 03 2006