A156410 Number of 12 X 12 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.

1, 1384, 217500, 8019000, 100368324, 534495232, 1814137996, 8671131376, 40142592042, 110049447136, 219088073110, 659368209568, 2165316809841, 4410398887272, 6632080108308, 15449498784320, 42194032310078

Offset

0,2

Links

Table of n, a(n) for n=0..16.

Crossrefs

Sequence in context: A250367 A092128 A360215 * A156413 A029819 A336192

Adjacent sequences: A156407 A156408 A156409 * A156411 A156412 A156413

Keyword

nonn

Author

R. H. Hardin, Feb 09 2009

Status

approved