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A156411 Number of 12X12 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n. 0
1, 120, 8940, 216680, 1939740, 7574400, 18391220, 48340560, 133072650, 294400160, 636803010, 1521100320, 3164432181, 5269056120, 9096418860, 18579992000, 34459271550, 49721066400, 70412760560, 126260708400, 215977376730 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

CROSSREFS

Sequence in context: A001785 A270848 A223960 * A076005 A218503 A221620

Adjacent sequences:  A156408 A156409 A156410 * A156412 A156413 A156414

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved

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Last modified July 22 03:22 EDT 2017. Contains 289648 sequences.