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A156516 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 53. 0
2, 12, 180, 6058, 2130020, 3614728470, 37525899871744, 1411771686417771108 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
LINKS
CROSSREFS
Sequence in context: A125861 A334175 A228508 * A228593 A067962 A134716
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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Last modified July 22 07:42 EDT 2024. Contains 374481 sequences. (Running on oeis4.)