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Search: id:A010883
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| A010883 |
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Simple periodic sequence: repeat 1,2,3,4. |
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+0
1
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| 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Partial sums are given by A130482(n)+n+1. - Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Jun 08 2007
1234/9999=0,123412341234... [From Eric Desbiaux (moongerms(AT)wanadoo.fr), Nov 03 2008]
Terms of the simple continued fraction of 5/(2*sqrt(39)-9). [From Paolo P. Lava (ppl(AT)spl.at), Feb 16 2009]
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FORMULA
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a(n) = 1 + (n mod 4) - Paolo P. Lava (ppl(AT)spl.at), Nov 21 2006
a(n)=A010873(n)+1. Also a(n)=1/2*(5-(-1)^n-2*(-1)^((2n-1+(-1)^n)/4))). G.f.: g(x)=(4x^3+3x^2+2x+1)/(1-x^4)=(4x^5-5x^4+1)/((1-x^4)(1-x)^2). - Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Jun 08 2007
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CROSSREFS
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Cf. A010872, A010873, A010874, A010875, A010876, A004526, A002264, A002265, A002266.
Sequence in context: A078978 A159957 A053840 this_sequence A011542 A053344 A092196
Adjacent sequences: A010880 A010881 A010882 this_sequence A010884 A010885 A010886
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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