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A172632
Number of n X n 0..2 arrays with row sums 15 and column sums 15
1
0, 0, 0, 0, 0, 0, 0, 40320, 655551508577280, 16426290801521822874931152, 682948436592331311886782349445512800, 56889017685903899457289215621889880980797696000
OFFSET
1,8
LINKS
CROSSREFS
Sequence in context: A072269 A259113 A195392 * A255358 A229675 A250905
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved