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Search: id:A141425
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| A141425 |
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Period 6: repeat 1, 2, 4, 5, 7, 8. |
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+0
16
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| 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4, 5, 7, 8, 1, 2, 4
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Terms of the simple continued fraction of 163/[4*sqrt(32370)-607]. Decimal expansion of 17036/50023. [From Paolo P. Lava (ppl(AT)spl.at), Aug 05 2009]
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FORMULA
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a(n)=(1/30)*{44*(n mod 6)+4*[(n+1) mod 6]-[(n+2) mod 6]+4*[(n+3) mod 6]-[(n+4) mod 6]+4*[(n+5) mod 6]} [From Paolo P. Lava (ppl(AT)spl.at), Aug 25 2008]
G.f.: x(1+2x+4x^2+5x^3+7x^4+8x^5)/((1-x)(1+x)(1-x+x^2)(1+x+x^2)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 11 2008]
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MATHEMATICA
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Select[ If[Mod[ #, 3] != 0, Mod[ #, 9], 0] & /@ Range@ 157, # > 0 &] (* Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 18 2008 *)
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PROGRAM
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(PARI) a(n)=(1+(n%2)+3*((n-1)%6))/2 [From Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Aug 30 2009]
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CROSSREFS
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Sequence in context: A062249 A081404 A081516 this_sequence A023962 A094562 A039241
Adjacent sequences: A141422 A141423 A141424 this_sequence A141426 A141427 A141428
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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), Aug 06 2008
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