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A156512
Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 50.
0
3, 22, 474, 21676, 6117690, 8086830378, 27448134968478, 351300513333271976
OFFSET
2,1
CROSSREFS
Sequence in context: A271849 A271850 A364844 * A119770 A272659 A233748
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved