A156463 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 16.

1, 2, 4, 11, 347, 38042, 12496449, 9230231522, 12532444401442, 31544855681886910

Offset

1,2

Links

Table of n, a(n) for n=1..10.

Crossrefs

Sequence in context: A198864 A038093 A057284 * A227530 A218129 A156519

Adjacent sequences: A156460 A156461 A156462 * A156464 A156465 A156466

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved