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A156515 Number of nXn arrays of squares of integers, symmetric about main diagonal, with all rows summing to 52. +0
1
2, 6, 134, 10554, 5819580, 9898523036, 72477416788308, 2085565005226231500 (list; graph; listen)
OFFSET

2,1

CROSSREFS

Sequence in context: A164955 A060001 A101753 this_sequence A090907 A159478 A047937

Adjacent sequences: A156512 A156513 A156514 this_sequence A156516 A156517 A156518

KEYWORD

nonn

AUTHOR

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

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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