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A192562 a(n) = sum(abs(stirling1(n,k))*stirling2(n+1,k+1)*k!,k=0..n). 0
1, 1, 5, 56, 1024, 27114, 969128, 44610432, 2556362016, 177733575120, 14692805761512, 1420846650571776, 158583233552744064, 20199186787986074400, 2908060636034265554880, 469318752131725598874624, 84293191721843435282950656 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..16.

MATHEMATICA

Table[Sum[Abs[StirlingS1[n, k]]StirlingS2[n+1, k+1]k!, {k, 0, n}], {n, 0, 100}]

PROG

(Maxima) makelist(sum(abs(stirling1(n, k))*stirling2(n+1, k+1)*k!, k, 0, n), n, 0, 24);

CROSSREFS

Sequence in context: A217818 A217819 A132618 * A060080 A203522 A180874

Adjacent sequences:  A192559 A192560 A192561 * A192563 A192564 A192565

KEYWORD

nonn

AUTHOR

Emanuele Munarini, Jul 04 2011

STATUS

approved

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Last modified May 28 16:37 EDT 2022. Contains 354119 sequences. (Running on oeis4.)