A388707 Decimal expansion of exp(Pi / 12) * 2^(3/4).

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

Offset

1,1

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

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

Index entries for transcendental numbers.

Formula

Empirical: Equals Sum_{k>=0} A192096(k) / exp(k*Pi).

Example

2.1850960212171425276765586911362001420...

Mathematica

First[RealDigits[Exp[Pi/12]*2^(3/4), 10, 100]] (* Paolo Xausa, Sep 20 2025 *)

Prog

(PARI) exp(Pi / 12) * 2^(3/4)

Crossrefs

Cf. A192096.

Sequence in context: A245836 A368386 A135520 * A136230 A383793 A193892

Adjacent sequences: A388704 A388705 A388706 * A388708 A388709 A388710

Keyword

nonn,cons,easy

Author

Simon Plouffe, Sep 18 2025

Status

approved