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Search: id:A014898
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A014898 a(1)=1, a(n)=15*a(n-1)+n. +0
2
1, 17, 258, 3874, 58115, 871731, 13075972, 196139588, 2942093829, 44131407445, 661971111686, 9929566675302, 148943500129543, 2234152501943159, 33512287529147400, 502684312937211016, 7540264694058165257 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n)=-15/196+15/196*15^n-1/14*n, with n>=1 [From Paolo P. Lava (ppl(AT)spl.at), Jan 14 2009]

MAPLE

a:=n->sum((15^(n-j)-1)/14, j=0..n): seq(a(n), n=1..17); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 05 2007

CROSSREFS

Sequence in context: A098302 A002590 A090457 this_sequence A048446 A001282 A135214

Adjacent sequences: A014895 A014896 A014897 this_sequence A014899 A014900 A014901

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Olivier Gerard (olivier.gerard(AT)gmail.com)

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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