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A147674 Period 9:repeat 81,27,9,27,27,9,27,81,9. +0
2
81, 27, 9, 27, 27, 9, 27, 81, 9, 81, 27, 9, 27, 27, 9, 27, 81, 9, 81, 27, 9, 27, 27, 9, 27, 81, 9, 81, 27, 9, 27, 27, 9, 27, 81, 9 (list; graph; listen)
OFFSET

0,1

COMMENT

Denominators with which Paschen A061039(3n)=A144454 and A061040(3n)=A147650 can be calculated. A144454=A028560(3n)/a(n), A147650=A017162(n+1)/a(n).

FORMULA

a(n)=(1/12)*{-85*(n mod 9)+107*[(n+1) mod 9]-61*[(n+2) mod 9]-13*[(n+3) mod 9]+35*[(n+4) mod 9]+11*[(n+5) mod 9]-13*[(n+6) mod 9]+35*[(n+7) mod 9]+83*[(n+8) mod 9]}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Nov 11 2008]

CROSSREFS

Sequence in context: A110727 A005068 A065793 this_sequence A033401 A143756 A087410

Adjacent sequences: A147671 A147672 A147673 this_sequence A147675 A147676 A147677

KEYWORD

nonn

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Nov 10 2008

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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