A156519 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 64.

1, 2, 4, 11, 10047, 7176242, 28757181899, 477133046143746

Offset

1,2

Links

Table of n, a(n) for n=1..8.

Crossrefs

Sequence in context: A156463 A227530 A218129 * A215795 A070314 A075554

Adjacent sequences: A156516 A156517 A156518 * A156520 A156521 A156522

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved