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A156437 Number of nXn arrays of squares of integers, symmetric about main diagonal, with all rows summing to 5. 0
2, 6, 42, 291, 2962, 44124, 2078160, 253938600, 45965640312, 10615656460584, 3031205165103456, 1051966701961097184 (list; graph; refs; listen; history; internal format)
OFFSET

2,1

CROSSREFS

Sequence in context: A033936 A203618 A098814 * A127071 A151333 A190626

Adjacent sequences:  A156434 A156435 A156436 * A156438 A156439 A156440

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.