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A016255
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Expansion of 1/((1-x)(1-7x)(1-12x)).
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0
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1, 20, 297, 3964, 50369, 624036, 7625689, 92469068, 1116354417, 13443332212, 161649541001, 1942101373212, 23321364646945, 279969412942148, 3360424215557433, 40330629408450796, 484006324653740753
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(0)=1, a(1)=20, a(n)=19*a(n-1)-84*a(n-2)+1. - Vincenzo Librandi, Feb 10 2011
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MAPLE
| a:=n->sum((12^(n-j)-7^(n-j))/5, 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: A132168 A069326 A001708 * A138794 A077758 A202270
Adjacent sequences: A016252 A016253 A016254 * A016256 A016257 A016258
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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