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A108289
Antidiagonal sums of table A060543.
2
1, 2, 5, 17, 72, 357, 2022, 12900, 91448, 711180, 6004981, 54619489, 531854438, 5515551251, 60642234815, 704106298738, 8603658260904, 110306422692488, 1479905106340895, 20727595895871297, 302423908621734606
OFFSET
0,2
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
KEYWORD
nonn
AUTHOR
Paul D. Hanna, May 31 2005
STATUS
approved