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A156519
Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 64.
0
1, 2, 4, 11, 10047, 7176242, 28757181899, 477133046143746
OFFSET
1,2
CROSSREFS
Sequence in context: A156463 A227530 A218129 * A215795 A070314 A075554
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved