A388809 Decimal expansion of (9/2) * Pi / Gamma(3/4)^4.

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

Offset

1,1

Links

Kelvin Voskuijl, Table of n, a(n) for n = 1..20000

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

Formula

Empirical: Equals Sum_{k>=0} A228746(k) / exp(k*Pi).

Example

6.2694176835855458663291081714641570919...

Mathematica

First[RealDigits[(9*Pi)/(2*Gamma[3/4]^4), 10, 100]]

Prog

(PARI) (9/2) * Pi / gamma(3/4)^4

Crossrefs

Cf. A228746.

Sequence in context: A221716 A346835 A369884 * A195474 A379888 A021945

Adjacent sequences: A388806 A388807 A388808 * A388810 A388811 A388812

Keyword

nonn,cons

Author

Simon Plouffe, Sep 18 2025

Status

approved