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A364945
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Decimal expansion of 1-Catalan.
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0
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0, 8, 4, 0, 3, 4, 4, 0, 5, 8, 2, 2, 7, 8, 0, 9, 8, 4, 9, 4, 5, 3, 9, 6, 4, 8, 5, 0, 6, 7, 6, 1, 5, 8, 8, 9, 2, 2, 5, 8, 5, 0, 6, 2, 5, 7, 1, 8, 3, 2, 7, 8, 6, 5, 7, 3, 3, 5, 0, 1, 8, 8, 0, 3, 7, 8, 2, 3, 6, 9, 8, 0, 2, 2, 3, 7, 4, 5, 2, 3, 0, 5, 2, 0, 6, 4, 3, 4, 8
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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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Equals 3F2( -1/2,-1/2,1 ; 1/2,1/2 ; -1) = (1/4) * Sum_{k>=0} (-1)^k/(k-1/2)^2.
Equals Sum_{k>=1} k*zeta(2*k+1)/16^k (Glaisher, 1913). - Amiram Eldar, Aug 14 2023
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EXAMPLE
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0.084034405822780984945396...
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MAPLE
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evalf(1-Catalan) ;
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MATHEMATICA
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RealDigits[1 - Catalan, 10, 120, -1][[1]] (* Amiram Eldar, Aug 14 2023 *)
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PROG
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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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