A388346 Decimal expansion of 8 * exp(-7*Pi/6) * sqrt(2).

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

Offset

0,1

Links

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

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

Index entries for transcendental numbers.

Formula

Empirical: Equals Sum_{k>=0} A022623(k) / exp(k*Pi).

Example

0.28962268272002563820309526005863317805496777891566536034944117956971027343....

Mathematica

First[RealDigits[8*Sqrt[2]*Exp[(-7*Pi)/6], 10, 100]]

Prog

(PARI) 8 * exp(-7/6 * Pi) * sqrt(2)

Crossrefs

Cf. A022623.

Sequence in context: A340778 A108744 A388516 * A195724 A081819 A296850

Adjacent sequences: A388343 A388344 A388345 * A388347 A388348 A388349

Keyword

nonn,cons

Author

Simon Plouffe, Sep 15 2025

Status

approved