A156470 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 19.

4, 68, 1844, 313880, 91441740, 58741831848, 78227960348272, 210460779796568160

Offset

3,1

Links

Table of n, a(n) for n=3..10.

Crossrefs

Sequence in context: A362730 A000658 A351027 * A326288 A302115 A009473

Adjacent sequences: A156467 A156468 A156469 * A156471 A156472 A156473

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved