A108289 - OEIS

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A108289

Antidiagonal sums of table A060543.

1, 2, 5, 17, 72, 357, 2022, 12900, 91448, 711180, 6004981, 54619489, 531854438, 5515551251, 60642234815, 704106298738, 8603658260904, 110306422692488, 1479905106340895, 20727595895871297, 302423908621734606

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

FORMULA

a(n)=Sum_{k=0..n} C(n+(n-k)*k, (n-k)*k+k).

PROG

(PARI) a(n)=sum(k=0, n, binomial(n+(n-k)*k, (n-k)*k+k))

CROSSREFS

Cf. A108267, A060543, A108288.

Sequence in context: A005967 A369402 A104859 * A007779 A084161 A325294

Adjacent sequences: A108286 A108287 A108288 * A108290 A108291 A108292

KEYWORD

nonn

AUTHOR

Paul D. Hanna, May 31 2005

STATUS

approved