

A058655


Decimal expansion of area under the curve 1/Gamma(x) from zero to infinity.


5



2, 8, 0, 7, 7, 7, 0, 2, 4, 2, 0, 2, 8, 5, 1, 9, 3, 6, 5, 2, 2, 1, 5, 0, 1, 1, 8, 6, 5, 5, 7, 7, 7, 2, 9, 3, 2, 3, 0, 8, 0, 8, 5, 9, 2, 0, 9, 3, 0, 1, 9, 8, 2, 9, 1, 2, 2, 0, 0, 5, 4, 8, 0, 9, 5, 9, 7, 1, 0, 0, 8, 8, 9, 1, 2, 1, 9, 0, 1, 6, 6, 5, 5, 1, 0, 1, 8, 5, 3, 0, 8, 1, 6, 8, 1, 9, 6, 6, 3, 8, 1, 4, 1, 8, 7
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OFFSET

1,1


COMMENTS

Referred to as the FransénRobinson constant.


LINKS

Harry J. Smith, Table of n, a(n) for n = 1..1001
Simon Plouffe, FransenRobibson constant
Simon Plouffe, FransenRobinson constant
Eric Weisstein's World of Mathematics, FransénRobinson Constant
F. Johansson, Value to 1000 decimal places.


EXAMPLE

2.807770242028519365221501186557772932308085920930198291220054809597100...


MATHEMATICA

RealDigits[ NIntegrate[ 1 / Gamma[ x ], {x, 0, Infinity}, AccuracyGoal > 72, WorkingPrecision > 90 ] ][ [ 1 ] ]


PROG

(PARI) intnum(x=0, [[1], 1], 1/gamma(x)) \\ Bill Allombert, May 18 2015


CROSSREFS

Cf. A046943 (continued fraction).
Sequence in context: A020860 A246725 A188934 * A058964 A021360 A028256
Adjacent sequences: A058652 A058653 A058654 * A058656 A058657 A058658


KEYWORD

nonn,cons


AUTHOR

Robert G. Wilson v, Jan 05 2001


EXTENSIONS

More terms from Philip Sung (philip_sung(AT)hotmail.com), Jan 22 2002


STATUS

approved



