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 A068113 Numerator of coefficient of (-x^2)^n in F(x)*F(-x) where F(x)=sum(k>=0,x^k/(k!)^3). 1
 1, 3, 5, 7, 11, 143, 221, 323, 7429, 437, 667, 20677, 899, 33263, 1363783, 2022161, 3065857, 3065857, 162490421, 4391633, 259106347, 385499687, 8965109, 600662303, 907383479, 66238993967, 66238993967, 98733594781, 8194888366823 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 REFERENCES Bruce Berndt, Ramanujan's Notebooks Part II, Springer-Verlag; see Hypergeometric series, p. 62. LINKS FORMULA F(x)*F(-x)=sum(n>=0, (3n)!/(n!)^3/((2n)!)^3*(-x^2)^n) MATHEMATICA F[x_] := HypergeometricPFQ[{}, {1, 1}, x]; F[x]*F[-x] + O[x]^58 // CoefficientList[#, x^2]& // Numerator // Abs (* Jean-François Alcover, Nov 17 2016 *) CROSSREFS Cf. A068112. Sequence in context: A083840 A088051 A159471 * A068831 A109862 A069804 Adjacent sequences:  A068110 A068111 A068112 * A068114 A068115 A068116 KEYWORD easy,frac,nonn AUTHOR Benoit Cloitre, Mar 21 2002 STATUS approved

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Last modified May 28 17:37 EDT 2020. Contains 334684 sequences. (Running on oeis4.)