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A016214 Expansion of 1/((1-x)(1-3x)(1-8x)). 0
1, 12, 109, 912, 7417, 59700, 478693, 3832824, 30672433, 245408988, 1963360477, 15707149536, 125657993449, 1005266339076, 8042137887061, 64337124619848, 514697061528865, 4117576685941164, 32940614068660045 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..18.

FORMULA

a(n) = 11*a(n-1) - 24.

*a(n-2) + 1 with a(0) = 1, a(1) = 12. - Vincenzo Librandi, Feb 10 2011

a(n) = (2*8^(n+2) - 7*3^(n+2) + 5)/70. - Yahia Kahloune, May 19 2013

MAPLE

a:=n->sum((8^(n-j+1)-3^(n-j+1))/5, j=0..n+1): seq(a(n), n=0..19); # Zerinvary Lajos, Jan 15 2007

CROSSREFS

Sequence in context: A085797 A016161 A081200 * A037581 A177071 A081183

Adjacent sequences:  A016211 A016212 A016213 * A016215 A016216 A016217

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified December 10 20:48 EST 2017. Contains 295856 sequences.