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Search: id:A153509
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| A153509 |
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Period 9: repeat 6,6,6,3,3,3,0,0,0. |
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+0
1
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| 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3
(list; graph; listen)
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OFFSET
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0,1
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FORMULA
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a(n)=(1/12)*{-7*(n mod 9)+[(n+1) mod 9]+[(n+2) mod 9]+5*[(n+3) mod 9]+[(n+4) mod 9]+[(n+5) mod 9]+5*[(n+6) mod 9]+[(n+7) mod 9]+[(n+8) mod 9]}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Dec 31 2008]
G.f.: 3(2+x^3)/((1-x)(1+x^3+x^6)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 21 2009]
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CROSSREFS
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Sequence in context: A101801 A019180 A019103 this_sequence A080066 A144539 A090143
Adjacent sequences: A153506 A153507 A153508 this_sequence A153510 A153511 A153512
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KEYWORD
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nonn
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Dec 28 2008
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EXTENSIONS
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More periods from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 21 2009
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