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A091725 Decimal expansion of second exponential integral at 1, ExpIntegralEi[1]. 8
1, 8, 9, 5, 1, 1, 7, 8, 1, 6, 3, 5, 5, 9, 3, 6, 7, 5, 5, 4, 6, 6, 5, 2, 0, 9, 3, 4, 3, 3, 1, 6, 3, 4, 2, 6, 9, 0, 1, 7, 0, 6, 0, 5, 8, 1, 7, 3, 2, 7, 0, 7, 5, 9, 1, 6, 4, 6, 2, 2, 8, 4, 3, 1, 8, 8, 2, 5, 1, 3, 8, 3, 4, 5, 3, 3, 8, 0, 4, 1, 5, 3, 5, 4, 8, 9, 0, 0, 7, 1, 0, 1, 2, 6, 1, 3, 8, 9, 5, 6, 9, 7, 1, 8, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Robert Price, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Exponential Integral

Eric Weisstein's World of Mathematics, Factorial Sums

MATHEMATICA

RealDigits[ExpIntegralEi[1], 10, 105][[1]] (* Robert G. Wilson v, Oct 08 2004 *)

PROG

(PARI) real(-eint1(-1)) \\ Charles R Greathouse IV, Apr 23 2013

CROSSREFS

Sequence in context: A243267 A243268 A203071 * A029689 A201294 A199383

Adjacent sequences:  A091722 A091723 A091724 * A091726 A091727 A091728

KEYWORD

nonn,cons

AUTHOR

Eric W. Weisstein, Feb 01 2004

STATUS

approved

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Last modified December 9 14:38 EST 2016. Contains 278971 sequences.