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A156510 Number of nXn arrays of squares of integers, symmetric about main diagonal, with all rows summing to 49. +0
1
1, 2, 10, 198, 10918, 2335392, 1569913286, 14728525914260, 599617717929388908 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A057119 A037267 A155200 this_sequence A159558 A001528 A088310

Adjacent sequences: A156507 A156508 A156509 this_sequence A156511 A156512 A156513

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Feb 09 2009

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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