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

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