A156391 Number of 7X7 arrays of squares of integers, symmetric about main diagonal, with all rows summing to n.

1, 232, 6912, 35150, 42354, 44124, 425674, 804511, 446508, 638012, 4465916, 5291400, 2246390, 3026820, 18106164, 25432912, 12496449, 5934606, 46859304, 91441740, 47944020, 17647254, 123856526, 218810112, 102258544, 46559350

Offset

0,2

Links

Table of n, a(n) for n=0..25.

Crossrefs

Sequence in context: A238919 A327831 A234682 * A279660 A188401 A307827

Adjacent sequences: A156388 A156389 A156390 * A156392 A156393 A156394

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved