A130581 Column 1 and row sums of triangle A130580.

1, 1, 2, 3, 5, 9, 18, 40, 98, 263, 769, 2439, 8357, 30808, 121677, 512654, 2294579, 10867855, 54272617, 284831748, 1566303877, 9000703543, 53917955406, 335961295910, 2173069940120, 14564444009958, 100977717043569

Offset

0,3

Links

Table of n, a(n) for n=0..26.

Crossrefs

Cf. A130580 (triangle); other columns: A130582, A130583.

Sequence in context: A099236 A234535 A320964 * A051236 A003218 A119002

Adjacent sequences: A130578 A130579 A130580 * A130582 A130583 A130584

Keyword

nonn

Author

Paul D. Hanna, Jun 05 2007

Status

approved