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A055854 Convolution of A055853 with A011782. 1
0, 1, 9, 53, 253, 1059, 4043, 14407, 48639, 157184, 489872, 1480608, 4358752, 12541184, 35364864, 97960192, 267050240, 717619200, 1903452160, 4989337600, 12937052160, 33212530688, 84484882432, 213090238464, 533236219904 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Ninth column of triangle A055587. T(n,7) of array T as in A049600.

LINKS

Table of n, a(n) for n=0..24.

FORMULA

a(n)= T(n, 7)= A055587(n+7, 8); G.f.: x*((1-x)^7)/(1-2*x)^8.

CROSSREFS

Cf. A049600, A055587, A055853, A011782.

Sequence in context: A197499 A036425 A126085 * A202514 A005025 A122588

Adjacent sequences:  A055851 A055852 A055853 * A055855 A055856 A055857

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang May 30 2000

STATUS

approved

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Last modified June 24 05:21 EDT 2019. Contains 324318 sequences. (Running on oeis4.)