A257896 Decimal expansion of (Pi-arctan(e))/(2*Pi).

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

Offset

0,1

Comments

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

Links

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

Formula

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

Example

0.3061042535821462494754842948127622057989073959973482346216694572...

Mathematica

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

Prog

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

Crossrefs

Cf. A000796, A257777.

Sequence in context: A307644 A081978 A117784 * A268978 A280585 A359218

Adjacent sequences: A257893 A257894 A257895 * A257897 A257898 A257899

Keyword

nonn,cons,easy

Author

Stanislav Sykora, May 12 2015

Status

approved