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Search: id:A144110
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| A144110 |
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Period 6: repeat 2,2,2,1,1,1 |
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+0
1
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| 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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a(n)=2 for n=0,1,2 modulo 6; a(n)=1 for n=3,4,5 modulo 6 .
Terms of the simple continued fraction of 29/[2*sqrt(210)-17]. Decimal expansion of 667/3003. [From Paolo P. Lava (ppl(AT)spl.at), Aug 05 2009]
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FORMULA
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G.f.: (1+2x^3)/((1-x)(1+x)(1-x+x^2)). a(n)= 3/2 -(-1)^n/6-A057079(n)/3. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 17 2008]
a(n)=(1/30)*{8*(n mod 6)+3*[(n+1) mod 6]+3*[(n+2) mod 6]-2*[(n+3) mod 6]+3*[(n+4) mod 6]+3*[(n+5) mod 6]}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Sep 19 2008]
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CROSSREFS
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Cf. A135265
Sequence in context: A126067 A048858 A135265 this_sequence A076490 A124278 A139755
Adjacent sequences: A144107 A144108 A144109 this_sequence A144111 A144112 A144113
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KEYWORD
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nonn
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Sep 11 2008, Sep 15 2008
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