A049349 - OEIS

A049349

Row sums of triangle A049325.

1, 7, 29, 103, 405, 1599, 6141, 23863, 92773, 359791, 1396493, 5421415, 21041397, 81670431, 317005341, 1230432919, 4775854213, 18537264079, 71951401517, 279275580103, 1083993881877, 4207466012031, 16331061009213

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OFFSET

1,2

COMMENTS

p(3,x) is row polynomial corresponding to triangle row A033842(3,m).

LINKS

Table of n, a(n) for n=1..23.

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

FORMULA

G.f.: x*(1+6*x+16*x^2+16*x^3)/(1-x-6*x^2-16*x^3-16*x^4) = x*p(3, x)/(1-x*p(3, x)) with x*p(3, x) G.f. for first column of A049325.

CROSSREFS

Sequence in context: A227086 A102485 A246038 * A124828 A296646 A037094

Adjacent sequences: A049346 A049347 A049348 * A049350 A049351 A049352

KEYWORD

easy,nonn

AUTHOR

Wolfdieter Lang

STATUS

approved