A172743 Number of n X 3 0..3 arrays with row sums 3 and column sums n.

1, 7, 55, 415, 3391, 28681, 248137, 2186815, 19546975, 176703337, 1612210777, 14823083089, 137176167025, 1276548044695, 11936862061495, 112092031526335, 1056512066133055, 9991003788000025, 94760438267696425, 901154863603211665

Offset

1,2

Links

R. H. Hardin, Table of n, a(n) for n=1..99

Crossrefs

Column k=3 of A333901.

Sequence in context: A069404 A198689 A320091 * A015564 A070997 A370177

Adjacent sequences: A172740 A172741 A172742 * A172744 A172745 A172746

Keyword

nonn

Author

R. H. Hardin, Feb 06 2010

Status

approved