A196533 - OEIS

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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

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OFFSET

2,1

LINKS

Table of n, a(n) for n=2..100.

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

FORMULA

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

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

EXAMPLE

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

MAPLE

evalf(15*exp(1));

MATHEMATICA

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

PROG

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

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

CROSSREFS

Sequence in context: A169821 A170990 A013666 * A200518 A016682 A198741

Adjacent sequences: A196530 A196531 A196532 * A196534 A196535 A196536

KEYWORD

nonn,cons,less,easy

AUTHOR

R. J. Mathar, Oct 03 2011

STATUS

approved