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A020528
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3rd Bernoulli polynomial evaluated at powers of 2 (multiplied by 6).
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0
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0, 18, 252, 2520, 22320, 187488, 1536192, 12435840, 100074240, 802948608, 6433016832, 51501864960, 412165877760, 3297930928128, 26385863196672, 211096568954880, 1688811205754880, 13510644263682048
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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) = 3*2^(n+1)*(2^(n+1)-1)*(2^(n+1)-2)/4. - Ralf Stephan, Apr 06 2004
G.f.: -18*x/((8*x-1)*(2*x-1)*(4*x-1)). (End)
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MAPLE
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seq(bernoulli(3, 2^i), i=0..24);
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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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