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A089459 Shifts 2 places left under the hyperbinomial transform. 0
1, 1, 1, 2, 6, 30, 221, 2201, 27769, 424757, 7639190, 157969167, 3692733181, 96293669499, 2771232779481, 87247362424120, 2982901522141490, 110057420712635526, 4358745145279372293, 184433423940319376323 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..19.

FORMULA

a(n+2) = sum(k=0, n, (n-k+1)^(n-k-1)*binomial(n, k)*a(k)), for n>=0, with a(0)=1, a(1)=1.

CROSSREFS

Cf. A088956, A001858.

Sequence in context: A108204 A088160 A112317 * A027882 A306782 A106209

Adjacent sequences:  A089456 A089457 A089458 * A089460 A089461 A089462

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Nov 04 2003

STATUS

approved

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Last modified June 12 19:31 EDT 2021. Contains 344960 sequences. (Running on oeis4.)