A090142 Decimal expansion of e^2 - e.

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

Offset: 1

Author

Eric W. Weisstein, Nov 22 2003

Keywords

• nonn
• cons
• easy

Comments

Expected number of picks from a uniform [0,1] needed to first exceed a sum of 2.

Examples

			4.670774270471604991870139989222345315423068476851887749120160194798497165725...
		

Links

• Daniel Mondot, Table of n, a(n) for n = 1..10000
• Eric Weisstein's World of Mathematics, Uniform Sum Distribution
• Index entries for transcendental numbers

Crossrefs

Cf. A001113, A072334, A090143, A089139, A090611.

Programs

Mathematica

RealDigits[N[Integrate[E, {x, 1, E}], 100]][[1]] (* Arkadiusz Wesolowski, May 30 2013 *)
RealDigits[E^2 - E, 10, 111][[1]] (* Robert G. Wilson v, Nov 05 2013 *)

PARI

exp(2)-exp(1) \\ Charles R Greathouse IV, Oct 02 2022

Formula

Equals Sum_{n>0} Sum_{k>0} n/(n!*k!). - Fredrik Johansson, Apr 21 2006