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A049378 Row sums of triangle A049353. 4
1, 6, 46, 436, 4956, 65776, 996976, 16957536, 319259296, 6581662336, 147290942976, 3552885191296, 91827536814976, 2530228890080256, 74003737259670016, 2288810287491774976, 74607500831801289216 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..17.

W. Lang, On generalizations of Stirling number triangles, J. Integer Seqs., Vol. 3 (2000), #00.2.4.

FORMULA

E.g.f. exp(p(x))-1 with p(x) := x*(2-x)*(2-2*x+x^2)/(4*(1-x)^4) (E.g.f. first column of A049353).

CROSSREFS

Sequence in context: A199563 A111531 A052781 * A218497 A001829 A006386

Adjacent sequences:  A049375 A049376 A049377 * A049379 A049380 A049381

KEYWORD

nonn

AUTHOR

Wolfdieter Lang

STATUS

approved

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Last modified May 21 06:39 EDT 2013. Contains 225476 sequences.