A388703 Decimal expansion of exp(-Pi) * (1+3^(1/2))^3.

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

Offset

0,1

Links

Paolo Xausa, Table of n, a(n) for n = 0..10000

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

Index entries for transcendental numbers.

Formula

Empirical: Equals Sum_{k>=0} A187148(k) / exp(k*Pi).

Equals A093580*A385259. - Paolo Xausa, Sep 20 2025

Example

0.88123139479961558344775847252101908639...

Mathematica

First[RealDigits[Exp[-Pi]*(1 + Sqrt[3])^3, 10, 100]] (* Paolo Xausa, Sep 20 2025 *)

Prog

(PARI) exp(-Pi) * (1+3^(1/2))^3

Crossrefs

Cf. A187148.

Cf. A093580, A385259.

Sequence in context: A141134 A176155 A174127 * A230153 A091648 A135707

Adjacent sequences: A388700 A388701 A388702 * A388704 A388705 A388706

Keyword

nonn,cons,easy

Author

Simon Plouffe, Sep 18 2025

Status

approved