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A156505
Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 41.
0
2, 22, 276, 6030, 711944, 541412940, 3816643437740, 85769714419958096
OFFSET
2,1
CROSSREFS
Sequence in context: A365529 A264836 A135634 * A367979 A256928 A349107
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved