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URL: https://oeis.org/A388835

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A388835

Decimal expansion of 2^(3/8) * Gamma(3/4)^2 / sqrt(Pi).

1

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

(list; constant; graph; refs; listen; history; text; internal format)

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} A246584(k) / exp(k*Pi).

EXAMPLE

1.0986994395787319278665333225607623706...

MATHEMATICA

First[RealDigits[(2^(3/8)*Gamma[3/4]^2)/Sqrt[Pi], 10, 100]]

PROG

(PARI) 2^(3/8) * gamma(3/4)^2 / sqrt(Pi)

CROSSREFS

Sequence in context: A389669 A388630 A002388 * A248080 A278828 A334448

Adjacent sequences: A388832 A388833 A388834 * A388836 A388837 A388838

KEYWORD

nonn,cons

AUTHOR

Simon Plouffe, Sep 21 2025

STATUS

approved