A388605 Decimal expansion of (2/9) * exp(Pi / 3) * 3^(1/2).

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

Offset

1,3

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} A132977(k) / exp(k*Pi).

Example

1.0968323006745059495945584831880852007...

Mathematica

First[RealDigits[(2*Exp[Pi/3])/(3*Sqrt[3]), 10, 100]]

Prog

(PARI) (2/9) * exp(Pi / 3) * 3^(1/2)

Crossrefs

Cf. A132977.

Sequence in context: A306553 A011194 A235916 * A198567 A021512 A154205

Adjacent sequences: A388602 A388603 A388604 * A388606 A388607 A388608

Keyword

nonn,cons

Author

Simon Plouffe, Sep 18 2025

Status

approved