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URL: https://oeis.org/A388473

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A388473

Decimal expansion of (1/2) * Pi^(1/4) * 2^(7/8) / Gamma(3/4).

1

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

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

OFFSET

0,1

LINKS

Table of n, a(n) for n=0..86.

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

FORMULA

Empirical: Equals Sum_{k>=0} A089798(k) / exp(k*Pi).

EXAMPLE

0.99626511456090713578995763852266833570...

MATHEMATICA

First[RealDigits[Pi^(1/4)/(2^(1/8)*Gamma[3/4]), 10, 100]]

PROG

(PARI) (1/2) * Pi^(1/4) * 2^(7/8) / gamma(3/4)

CROSSREFS

Sequence in context: A347150 A346850 A388959 * A344505 A334478 A262823

Adjacent sequences: A388470 A388471 A388472 * A388474 A388475 A388476

KEYWORD

nonn,cons

AUTHOR

Simon Plouffe, Sep 17 2025

STATUS

approved