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A139760 First quadrisection of A115451. +0
1
1, 9, 137, 2185, 34953, 559241, 8947849, 143165577, 2290649225 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)=16a(n-1)-7.

a(n)=(1/15)*[7+8*16^n], with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Jun 19 2008

CROSSREFS

Adjacent sequences: A139757 A139758 A139759 this_sequence A139761 A139762 A139763

Sequence in context: A052137 A003376 A081876 this_sequence A112702 A092652 A137051

KEYWORD

nonn

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), May 20 2008

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.


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