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A130581 Column 1 and row sums of triangle A130580. 3
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 22 17:16 EDT 2020. Contains 337291 sequences. (Running on oeis4.)