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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

Table of n, a(n) for n=0..104.

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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Last modified December 7 09:29 EST 2016. Contains 278849 sequences.