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Search: id:A130773
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| A130773 |
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a(0)=0, a(1)=2, a(n)=2n+1 for n >= 2. |
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+0
2
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| 0, 2, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Apart from initial term, identical to A140139 if offsets are ignored. R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 11 2008
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FORMULA
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O.g.f.: x(1+x)(2-x)/(1-x)^2. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 11 2008
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CROSSREFS
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Adjacent sequences: A130770 A130771 A130772 this_sequence A130774 A130775 A130776
Sequence in context: A007300 A007069 A140139 this_sequence A024704 A024510 A029905
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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), Jul 14 2007
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