A156382 Number of 4X4 arrays of squares of integers, symmetric about main diagonal, with all rows summing to n.

1, 10, 18, 10, 11, 42, 42, 10, 18, 68, 60, 42, 20, 68, 96, 42, 11, 84, 114, 68, 60, 130, 84, 42, 42, 142, 228, 158, 34, 210, 240, 52, 18, 174, 240, 210, 127, 110, 252, 130, 60, 276, 318, 142, 84, 390, 192, 84, 20, 198, 474, 324, 134, 180, 486, 174, 96, 286, 198, 300, 174

Offset

0,2

Links

Table of n, a(n) for n=0..60.

Crossrefs

Sequence in context: A002744 A320930 A337325 * A214894 A368477 A084487

Adjacent sequences: A156379 A156380 A156381 * A156383 A156384 A156385

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved