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A172835
Number of 3*n X n 0..4 arrays with row sums 5 and column sums 15
1
0, 580, 2332105236, 419542137630783552, 1775125806066054844658927631, 107592348627283647736871768193003754560, 64299439861739255917710165174342650682005907347040
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A185606 A206616 A172763 * A172883 A260541 A162705
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved