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A156437 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 5. 0
2, 6, 42, 291, 2962, 44124, 2078160, 253938600, 45965640312, 10615656460584, 3031205165103456, 1051966701961097184 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
LINKS
CROSSREFS
Sequence in context: A272177 A346548 A321250 * A127071 A353994 A151333
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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Last modified February 22 16:01 EST 2024. Contains 370256 sequences. (Running on oeis4.)