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A172561
Number of 3*n X n 0..1 arrays with row sums 5 and column sums 15
1
0, 0, 0, 0, 1, 137225088000, 452489654840076972518400, 5638345005774311804302107347272704000, 289360589460480315988823313632867603848637000544000
OFFSET
1,6
LINKS
CROSSREFS
Sequence in context: A034652 A015402 A108389 * A172600 A172704 A172793
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved