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A372773
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Decimal expansion of Sum_{k>=0} (2*k + 1)!/(3*k + 1)!.
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1
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1, 2, 7, 5, 2, 5, 8, 6, 4, 7, 9, 4, 7, 9, 0, 9, 1, 2, 3, 2, 8, 8, 9, 1, 9, 1, 6, 6, 8, 9, 4, 9, 5, 4, 1, 9, 7, 6, 2, 7, 5, 5, 0, 5, 7, 1, 0, 7, 0, 0, 7, 0, 6, 2, 0, 8, 2, 0, 9, 3, 2, 2, 7, 7, 4, 2, 3, 7, 7, 3, 2, 9, 4, 4, 8, 7, 1, 7, 6, 1, 3, 5, 7, 4, 4, 0
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OFFSET
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1,2
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LINKS
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FORMULA
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Equals hypergeom([1, 3/2], [2/3, 4/3], 4/27).
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EXAMPLE
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1.275258647947909123288919166894954197...
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MATHEMATICA
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s = Sum[(2 k + 1)!/(3 k + 1)!, {k, 0, Infinity}]
d = N[s, 100]
First[RealDigits[d]]
N[HypergeometricPFQ[{1, 3/2}, {2/3, 4/3}, 4/27], 100]
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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