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A025933 Expansion of 1/((1-2x)(1-3x)(1-5x)(1-9x)). 0
1, 19, 240, 2570, 25391, 240489, 2226310, 20352640, 184772181, 1670999759, 15079423580, 135917468310, 1224272081371, 11023527831829, 99237160300050, 893261534749580, 8039989402000961, 72363082951440699, 651283639391863720, 5861632222156996450, 52755087348022338951 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

FORMULA

a(0)=1, a(1)=19, a(2)=240; a(n)=(9^(n+3)-7*5^(n+3)+14*3^(n+3)-8*2^(n+3))/168. [Yahia Kahloune, May 08 2013]

PROG

(PARI) x='x+O('x^66); Vec(1/((1-2*x)*(1-3*x)*(1-5*x)*(1-9*x))) \\ Joerg Arndt, May 08 2013

CROSSREFS

Sequence in context: A142615 A021814 A299864 * A107203 A021544 A021772

Adjacent sequences:  A025930 A025931 A025932 * A025934 A025935 A025936

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified September 28 17:43 EDT 2020. Contains 337393 sequences. (Running on oeis4.)