A172773 Number of 3*n X 9 0..3 arrays with row sums 6 and column sums 2*n

352128, 654393258290520, 2538708180710780880644304, 14906195150068924678040454978560280, 110716878274689761475592889715532248440554848

Offset

1,1

Links

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

Crossrefs

Sequence in context: A237098 A172664 A172676 * A172840 A172886 A172916

Adjacent sequences: A172770 A172771 A172772 * A172774 A172775 A172776

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved