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A016217
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Expansion of 1/((1-x)(1-3x)(1-12x)).
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0
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1, 16, 205, 2500, 30121, 361816, 4342885, 52117900, 625424641, 7505125216, 90061591165, 1080739359700, 12968873113561, 155626479754216, 1867517764225045, 22410213192223900, 268922558371256881
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(0)=1, a(1)=16, a(n)=15*a(n-1)-36*a(n-2)+1. - Vincenzo Librandi, Feb 10 2011
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MAPLE
| a:=n->sum((12^(n-j)-3^(n-j))/9, j=0..n): seq(a(n), n=1..17); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 12 2007
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CROSSREFS
| Sequence in context: A144632 A161729 A157707 * A055758 A046088 A186853
Adjacent sequences: A016214 A016215 A016216 * A016218 A016219 A016220
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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