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A025932
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Expansion of 1/((1-2x)(1-3x)(1-5x)(1-8x)).
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0
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1, 18, 213, 2114, 19173, 165354, 1384741, 11393778, 92748645, 750039290, 6040740069, 48528576642, 389243479717, 3119026937226, 24977625311397, 199948094540306, 1600220345577189, 12804941098049562, 102455421613293925
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n) = 18*a(n-1) - 111*a(n-2) + 278*a(n-3) - 240*a(n-4), n >= 4.
a(n) = 13*a(n-1) - 40*a(n-2) + 3^(n+1) - 2^(n+1), n >= 2. (End)
a(n) = 4*8^(n+2)/45 - 2^(n+2)/9 - 5^(n+3)/18 + 3^(n+3)/10. - R. J. Mathar, Mar 19 2011
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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