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A187649 Alternated cumulative sums of the central Stirling numbers of the second kind. 0
1, 0, 7, 83, 1618, 40907, 1282745, 48046535, 2093717518, 104081678237, 5813503286418, 360468997583868, 24569735593174392, 1825998838660375668, 146956989225714933732, 12732911083544911106268, 1181728606386262922675817 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

FORMULA

Formula: a(n) = sum((-1)^(n-k)S(2k,k)),k=0..n)

MAPLE

seq(sum((-1)^(n-k)*combinat[stirling2](2*k, k), k=0..n), n=0..12);

MATHEMATICA

Table[Sum[(-1)^(n-k)StirlingS2[2k, k], {k, 0, n}], {n, 0, 16}]

PROG

(Maxima) makelist(sum((-1)^(n-k)*stirling2(2*k, k), k, 0, n), n, 0, 12);

CROSSREFS

Cf. A008277 (Stirling2 triangle)

Sequence in context: A099668 A240170 A231259 * A053128 A027819 A177009

Adjacent sequences:  A187646 A187647 A187648 * A187650 A187651 A187652

KEYWORD

nonn,easy

AUTHOR

Emanuele Munarini, Mar 12 2011

STATUS

approved

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Last modified December 20 01:21 EST 2014. Contains 252240 sequences.