0,1

Fraction of the horizon obstructed by the exponential curve y=exp(x) when viewed from the origin.

Stanislav Sykora, Table of n, a(n) for n = 0..2000

Equals 1/2 - A257777/(2*Pi).

0.3061042535821462494754842948127622057989073959973482346216694572...

RealDigits[(Pi-ArcTan[E])/(2Pi), 10, 120][[1]] (* Harvey P. Dale, Oct 23 2017 *)

(PARI) (Pi-atan(exp(1)))/(2*Pi)

Cf. A000796, A257777.

Sequence in context: A307644 A081978 A117784 * A268978 A280585 A197807

Adjacent sequences: A257893 A257894 A257895 * A257897 A257898 A257899

nonn,cons,easy

Stanislav Sykora, May 12 2015

approved