A156394 Number of 7X7 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.

1, 0, 0, 42, 54, 0, 0, 7, 60, 0, 0, 144, 90, 0, 0, 24, 201, 0, 0, 336, 660, 0, 0, 60, 210, 0, 0, 930, 163, 0, 0, 150, 804, 0, 0, 1092, 1830, 0, 0, 168, 714, 0, 0, 2382, 492, 0, 0, 414, 984, 0, 0, 2340, 3432, 0, 0, 343, 768, 0, 0, 3690, 408, 0, 0, 643, 3039, 0, 0, 3216, 7986, 0, 0

Offset

0,4

Links

Table of n, a(n) for n=0..70.

Crossrefs

Sequence in context: A108119 A175103 A116262 * A083244 A125009 A008886

Adjacent sequences: A156391 A156392 A156393 * A156395 A156396 A156397

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved