A172835 Number of 3*n X n 0..4 arrays with row sums 5 and column sums 15

0, 580, 2332105236, 419542137630783552, 1775125806066054844658927631, 107592348627283647736871768193003754560, 64299439861739255917710165174342650682005907347040

Offset

1,2

Links

R. H. Hardin, Table of n, a(n) for n=1..13

Crossrefs

Sequence in context: A185606 A206616 A172763 * A172883 A260541 A162705

Adjacent sequences: A172832 A172833 A172834 * A172836 A172837 A172838

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved