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A156515 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 52. 0
2, 6, 134, 10554, 5819580, 9898523036, 72477416788308, 2085565005226231500 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
LINKS
CROSSREFS
Sequence in context: A288185 A359961 A274695 * A254223 A206849 A368395
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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Last modified June 21 20:04 EDT 2024. Contains 373559 sequences. (Running on oeis4.)