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A068180 Prod(i=1,4,x+i)/Prod(i=1,4,x-i)=Sum(n=1,inf,a(n)/A067419(n)*x^n). +0
1
1, 25, 625, 11095, 164125, 2201575, 28021525, 346791295, 4228592125, 51161968375, 616523997925, 7414045240495, 89064205082125, 1069348964379175, 12835676881182325, 154049132081273695 (list; graph; listen)
OFFSET

1,2

FORMULA

lim n -> infinity a(n)/A067419(n)= 20

For n>1, a(n) = 5/6*12^n - 15/2*6^n + 35/2*4^n - 35/3*3^n. - R. Stephan, May 08 2004

CROSSREFS

Sequence in context: A104643 A061614 A097780 this_sequence A009969 A042202 A152256

Adjacent sequences: A068177 A068178 A068179 this_sequence A068181 A068182 A068183

KEYWORD

easy,nonn

AUTHOR

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

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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