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A068179 Prod(i=1,3,x+i)/Prod(i=1,3,i-x)=Sum(n=0,inf,a(n)/b(n)*x^n). +0
1
1, 11, 121, 971, 6721, 43331, 269641, 1648091, 9981841, 60176051, 361921561, 2174145611, 13052763361, 78340331171, 470113403881, 2820895001531, 16926014399281, 101558020876691, 609353931324601, 3656141011383851 (list; graph; listen)
OFFSET

0,2

FORMULA

n>0 b(n)=A026532(2n-1). lim n -> infinity a(n)/b(n)= 12.

CROSSREFS

Sequence in context: A045595 A014951 A015958 this_sequence A006940 A070844 A073913

Adjacent sequences: A068176 A068177 A068178 this_sequence A068180 A068181 A068182

KEYWORD

easy,frac,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 12 2002

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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