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A156409 Number of 12X12 arrays of squares of integers, symmetric about main diagonal, with all rows summing to n. 0
1, 140152, 1521077404, 1322299270600, 148617033979348, 3031205165103456, 19223028387830564, 241889456638665264, 4311704697906480578 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A206748 A018234 A179583 * A186613 A036527 A203833

Adjacent sequences:  A156406 A156407 A156408 * A156410 A156411 A156412

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009

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Last modified February 14 11:17 EST 2012. Contains 205623 sequences.