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A014882
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a(1)=1, a(n)=12*a(n-1)+n.
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1
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1, 14, 171, 2056, 24677, 296130, 3553567, 42642812, 511713753, 6140565046, 73686780563, 884241366768, 10610896401229, 127330756814762, 1527969081777159, 18335628981325924, 220027547775911105
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| a(n)=-12/121+12/121*12^n-1/11*n, with n>=1 [From Paolo P. Lava (paoloplava(AT)gmail.com), Jan 14 2009]
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MAPLE
| a:=n->sum((12^(n-j)-1^(n-j))/11, j=0..n): seq(a(n), n=1..17); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 12 2007
a := n-> (Matrix ([[1, 0, 1], [1, 1, 1], [0, 0, 12]])^n)[2, 3]; seq(a(n), n=1..17); [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Aug 06 2008]
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CROSSREFS
| Sequence in context: A199529 A098299 A099158 * A048443 A191690 A016136
Adjacent sequences: A014879 A014880 A014881 * A014883 A014884 A014885
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Olivier Gerard (olivier.gerard(AT)gmail.com)
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