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Search: id:A014897
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| A014897 |
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a(1)=1, a(n)=14*a(n-1)+n. |
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+0
2
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| 1, 16, 227, 3182, 44553, 623748, 8732479, 122254714, 1711566005, 23961924080, 335466937131, 4696537119846, 65751519677857, 920521275490012, 12887297856860183, 180422169996042578, 2525910379944596109
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(n)=-14/169+14/169*14^n-1/13*n, with n>=1 [From Paolo P. Lava (ppl(AT)spl.at), Jan 14 2009]
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MAPLE
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a:=n->sum((14^(n-j)-1)/13, j=0..n): seq(a(n), n=1..17); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 05 2007
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CROSSREFS
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Sequence in context: A051822 A017438 A098301 this_sequence A048445 A028340 A119463
Adjacent sequences: A014894 A014895 A014896 this_sequence A014898 A014899 A014900
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Olivier Gerard (olivier.gerard(AT)gmail.com)
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