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A016243 Expansion of 1/((1-x)(1-6x)(1-8x)). 0
1, 15, 163, 1563, 14059, 121803, 1030411, 8579211, 70649227, 577287051, 4690855819, 37962203019, 306309762955, 2466150936459, 19823244488587, 159150177890187, 1276586755010443, 10233006031417227, 81985920199339915 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

FORMULA

a(n) = 14*a(n-1) - 48*a(n-2) + 1 with a(0)=1, a(1)=15. - Vincenzo Librandi, Feb 10 2011

a(n) = (5*8^(n+2) - 7*6^(n+2) + 2)/70. - Yahia Kahloune, May 19 2013

MAPLE

a:=n->sum((8^(n-j)-6^(n-j))/2, j=0..n): seq(a(n), n=1..19); # Zerinvary Lajos, Jan 15 2007

MATHEMATICA

Table[(5*8^(n + 2) - 7*6^(n + 2) + 2)/70, {n, 0, 20}] (* Wesley Ivan Hurt, Jun 06 2014 *)

PROG

(MAGMA) [(5*8^(n+2) - 7*6^(n+2) + 2)/70 : n in [0..50]]; // Wesley Ivan Hurt, Jun 06 2014

CROSSREFS

Sequence in context: A014920 A081034 A279157 * A164599 A016291 A229406

Adjacent sequences:  A016240 A016241 A016242 * A016244 A016245 A016246

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Dec 11 1999

STATUS

approved

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Last modified June 20 19:33 EDT 2019. Contains 324234 sequences. (Running on oeis4.)