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 A212877 Decimal expansion of the real part of i!. 3
 4, 9, 8, 0, 1, 5, 6, 6, 8, 1, 1, 8, 3, 5, 6, 0, 4, 2, 7, 1, 3, 6, 9, 1, 1, 1, 7, 4, 6, 2, 1, 9, 8, 0, 9, 1, 9, 5, 2, 9, 6, 2, 9, 6, 7, 5, 8, 7, 6, 5, 0, 0, 9, 2, 8, 9, 2, 6, 4, 2, 9, 5, 4, 9, 9, 8, 4, 5, 8, 3, 0, 0, 4, 3, 5, 9, 8, 1, 9, 3, 4, 5, 0, 7, 8, 9, 4, 5, 0, 4, 2, 8, 2, 6, 7, 0, 5, 8, 1, 4, 0, 5, 6, 0, 6 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Also the negated imaginary part of Gamma(i). LINKS Sykora S., Mathematical Constants, Stan's Library, Vol.II Wikipedia, Particular values of the Gamma function FORMULA i! = gamma(1+i) = i*gamma(i). EXAMPLE 0.498015668118356042713691117462198... MATHEMATICA RealDigits[Re[Gamma[I + 1]], 10, 105] (* T. D. Noe, May 29 2012 *) PROG (PARI) real(I*gamma(I)) CROSSREFS Cf. A212878 (-imag(i!)), A212879 (abs(i!)), A212880 (-arg(i!)). Sequence in context: A154684 A256174 A096982 * A205297 A159643 A200398 Adjacent sequences:  A212874 A212875 A212876 * A212878 A212879 A212880 KEYWORD nonn,cons,easy AUTHOR Stanislav Sykora, May 29 2012 STATUS approved

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