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A029761 Partial sums of A005001. 7
1, 3, 7, 16, 40, 116, 395, 1551, 6847, 33290, 175708, 996696, 6031281, 38710303, 262288647, 1868825536, 13955504572, 108907053412, 885935408411, 7495705968467, 65829634763895, 599033379716074, 5638952863115576, 54830878201599424, 549981672834888561 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..500

MAPLE

b:= proc(n) option remember; `if`(n>0, b(n-1), 0)+combinat[bell](n) end:

a:= proc(n) option remember; `if`(n>0, a(n-1), 0)+b(n) end:

seq(a(n), n=0..30);  # Alois P. Heinz, Apr 20 2012

MATHEMATICA

Table[Sum[BellB[k], {k, 0, n }], {n, 0, 24}] // Accumulate (* Jean-Fran├žois Alcover, Mar 13 2014 *)

CROSSREFS

Sequence in context: A263316 A001698 A261236 * A009337 A036567 A018023

Adjacent sequences:  A029758 A029759 A029760 * A029762 A029763 A029764

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 11 03:47 EST 2016. Contains 268159 sequences.