login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A212879 Decimal expansion of the absolute value of i!. 4
5, 2, 1, 5, 6, 4, 0, 4, 6, 8, 6, 4, 9, 3, 9, 8, 4, 1, 1, 5, 8, 1, 8, 0, 2, 6, 9, 6, 2, 8, 1, 9, 0, 0, 5, 3, 8, 5, 6, 4, 0, 5, 6, 7, 8, 2, 7, 7, 8, 9, 5, 6, 3, 1, 9, 2, 5, 5, 6, 8, 1, 2, 2, 4, 4, 4, 2, 4, 8, 6, 9, 5, 2, 3, 6, 2, 2, 8, 0, 8, 1, 6, 5, 4, 1, 1, 2, 7, 4, 9, 3, 6, 6, 7, 5, 2, 4, 1, 0, 9, 6, 6, 5, 3, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Also absolute value of Gamma(i).

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..5000

FORMULA

abs(Gamma(i)), since i! = Gamma(1+i) = i*Gamma(i).

a(n) ~ sqrt(Pi/sinh(Pi)). - Vaclav Kotesovec, Dec 10 2015

EXAMPLE

0.5215640468649398411581802696...

MATHEMATICA

N[Sqrt[Pi/Sinh[Pi]], 103] (* Vaclav Kotesovec, Dec 10 2015 *)

PROG

(PARI) abs(gamma(I))

CROSSREFS

A090986, A212877 (real(i!)), A212878 (-imag(i!)), A212880 (-arg(i!)).

Sequence in context: A266455 A091505 A030357 * A276524 A111395 A188596

Adjacent sequences:  A212876 A212877 A212878 * A212880 A212881 A212882

KEYWORD

nonn,cons,easy

AUTHOR

Stanislav Sykora, May 29 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified April 27 15:06 EDT 2017. Contains 285528 sequences.