A388099 Decimal expansion of (1/8) * exp(3*Pi/4).

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

Offset

1,2

Links

Table of n, a(n) for n=1..87.

Simon Plouffe, Numbers in the base e^Pi, 2025.

Formula

Empirical: Equals Sum_{k>=0} A001940(k) / exp(k*Pi).

Example

1.3188405092747202734708839309306632093...

Mathematica

First[RealDigits[Exp[(3*Pi)/4]/8, 10, 100]]

Prog

(PARI) 1/8 * exp(3/4 * Pi)

Crossrefs

Cf. A001940.

Sequence in context: A245651 A007023 A176103 * A388960 A388353 A308666

Adjacent sequences: A388096 A388097 A388098 * A388100 A388101 A388102

Keyword

nonn,cons

Author

Simon Plouffe, Sep 14 2025

Status

approved