A388324 Decimal expansion of exp(-Pi/8) * 2^(3/8).

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

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} A022598(k) / exp(k*Pi).

Example

0.87566744511363025563901731087084853026...

Mathematica

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

Prog

(PARI) exp(-1/8 * Pi) * 2^(3/8)

Crossrefs

Cf. A022598.

Sequence in context: A086033 A246504 A182527 * A388603 A343966 A195846

Adjacent sequences: A388321 A388322 A388323 * A388325 A388326 A388327

Keyword

nonn,cons

Author

Simon Plouffe, Sep 15 2025

Status

approved