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A173296
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Numerators of the inverse binomial transform of the Leibniz series for Pi/4.
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2
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1, -4, 28, -96, 1328, -4672, 33472, -121856, 3597056, -13417472, 33655808, -127508480, 5829259264, -22308732928, 171393728512, -660468137984, 40831182635008, -22589996269568, 175323994652672, -681560447647744
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OFFSET
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0,2
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COMMENTS
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The series terms for Pi/4 are 1, -1/3, 1/5, -1/7, 1/9, -1/11, + ...
Its inverse binomial transform is 1, -4/3, 28/15, -96/35, 1328/315, -4672/693, + ...
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LINKS
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MAPLE
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L := [seq((-1)^n/(2*n+1), n=0..20)] ;
read("transforms") ; BINOMIALi(L) ;
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CROSSREFS
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KEYWORD
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frac,sign
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AUTHOR
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EXTENSIONS
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a(3) replaced with reduced numerator and a(5) onwards added by R. J. Mathar, Jul 06 2011
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STATUS
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approved
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