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 A016239 Expansion of 1/((1-x)(1-5x)(1-12x)). 0
 1, 18, 247, 3120, 38221, 462558, 5570227, 66940380, 803772841, 9647715498, 115784793007, 1389478551240, 16674047790661, 200090099366838, 2401088821796587, 28813104008531700, 345757438837243681 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS FORMULA a(0)=1, a(1)=18; for n>1, a(n)=17*a(n-1)-60*a(n-2)+1. - Vincenzo Librandi, Feb 10 2011 a(n) = (4*12^(n+2) - 11*5^(n+2) + 7)/308. [Yahia Kahloune, Aug 13 2013] MAPLE a:=n->sum((12^(n-j)-5^(n-j))/7, j=0..n): seq(a(n), n=1..17); # Zerinvary Lajos, Jan 12 2007 PROG (PARI) a(n) = (4*12^(n+2) - 11*5^(n+2) + 7)/308; \\ Joerg Arndt, Aug 13 2013 CROSSREFS Sequence in context: A110395 A153600 A016183 * A153886 A154241 A154250 Adjacent sequences:  A016236 A016237 A016238 * A016240 A016241 A016242 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified May 12 04:27 EDT 2021. Contains 343810 sequences. (Running on oeis4.)