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Search: id:A131669
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A131669 Odd digits followed by positive even digits. +0
1
1, 3, 5, 7, 9, 2, 4, 6, 8, 1, 3, 5, 7, 9, 2, 4, 6, 8, 1, 3, 5, 7, 9, 2, 4, 6, 8, 1, 3, 5, 7, 9, 2, 4, 6, 8, 1, 3, 5, 7, 9, 2, 4, 6, 8, 1, 3, 5, 7, 9, 2, 4, 6, 8, 1, 3, 5, 7, 9, 2, 4, 6, 8, 1, 3, 5, 7, 9, 2, 4, 6, 8, 1, 3, 5, 7, 9, 2, 4, 6, 8 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n)=(1/12)*{11*(n mod 9)-[(n+1) mod 9]-[(n+2) mod 9]-[(n+3) mod 9]+11*[(n+4) mod 9]-[(n+5) mod 9]-[(n+6) mod 9]-[(n+7) mod 9]-[(n+8) mod 9]}, with n>=0. - Paolo P. Lava (ppl(AT)spl.at), Nov 19 2007

CROSSREFS

Sequence in context: A118622 A031312 A032764 this_sequence A004155 A065271 A029657

Adjacent sequences: A131666 A131667 A131668 this_sequence A131670 A131671 A131672

KEYWORD

nonn

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Oct 03 2007

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.


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