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A156512 Number of nXn arrays of squares of integers, symmetric about main diagonal, with all rows summing to 50. +0
1
3, 22, 474, 21676, 6117690, 8086830378, 27448134968478, 351300513333271976 (list; graph; listen)
OFFSET

2,1

CROSSREFS

Sequence in context: A046947 A002485 A099750 this_sequence A119770 A153230 A132558

Adjacent sequences: A156509 A156510 A156511 this_sequence A156513 A156514 A156515

KEYWORD

nonn

AUTHOR

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

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.


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