A389019 Decimal expansion of 2 * Gamma(3/4)^4 / Pi.

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

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} A284286(k) / exp(k*Pi).

Example

1.4355400220922599956423864473315588533...

Mathematica

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

Prog

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

Crossrefs

Cf. A284286.

Sequence in context: A024477 A368595 A388760 * A270649 A049008 A280023

Adjacent sequences: A389016 A389017 A389018 * A389020 A389021 A389022

Keyword

nonn,cons

Author

Simon Plouffe, Sep 22 2025

Status

approved