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A058655 Decimal expansion of area under the curve 1/Gamma(x) from zero to infinity. 7
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 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Referred to as the Fransén-Robinson constant.

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..1001

F. Johansson, Value to 1000 decimal places.

Simon Plouffe, Fransen-Robibson constant

Simon Plouffe, Fransen-Robinson constant

Eric Weisstein's World of Mathematics, Fransén-Robinson Constant

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

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Last modified December 6 12:54 EST 2016. Contains 278781 sequences.