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Search: id:A137173
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| 0, 1, 1, 3, 6, 10, 28, 36, 120, 136, 496, 528, 2016, 2080, 8128, 8256, 32640, 32896, 130816, 131328, 523776, 524800, 2096128, 2098176, 8386560, 8390656, 33550336, 33558528, 134209536, 134225920, 536854528, 536887296, 2147450880, 2147516416
(list; graph; listen)
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OFFSET
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0,4
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FORMULA
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a(2n)=A006516(n). a(2n+1)=A007582(n).
a(2n)+a(2n+1) = A000302(n). a(2n+1)-a(2n)=A000079(n).
O.g.f.: x^2/((x^4+x^3+x^2+x+1)(x-1)^4). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 16 2008
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KEYWORD
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nonn,easy,new
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), May 11 2008
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EXTENSIONS
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Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 16 2008
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