A196533 Decimal expansion of 15*e.

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

Offset: 2

Author

R. J. Mathar, Oct 03 2011

Keywords

• nonn
• cons
• less
• easy

Examples

			40.7742274268856785304043120702... = 15*A001113 = 30*A019739.
		

Links

• L. B. W. Jolley, Summation of Series, Dover, 1961, eq (101) on page 20.

Programs

Magma

SetDefaultRealField(RealField(100)); 15*Exp(1); // Vincenzo Librandi, Apr 05 2020

Maple

evalf(15*exp(1));

Mathematica

RealDigits[15 E,10,120][[1]] (* Harvey P. Dale, Aug 24 2019 *)

PARI

15*exp(1) \\ Charles R Greathouse IV, Apr 21 2016

Formula

Equals sum(j>=1, j^3/(j-1)! ).

Equals 10 * sum(n>=1, A000217(n)/n! ). - Richard R. Forberg, Jul 14 2013