1,4

Harvey Heinz, Pandiagonal 5 X 5.

Eric Weisstein's World of Mathematics, Panmagic Square

Cf. A006052.

Adjacent sequences: A027564 A027565 A027566 this_sequence A027568 A027569 A027570

Sequence in context: A042105 A079240 A162700 this_sequence A033475 A053060 A004034

nonn,hard,more

Eric Weisstein (eric(AT)weisstein.com)

Corrected by Eric Weisstein Mar 14 2003 to include only distinct squares; Hunter and Madachy give the count of all such squares (384).