A388345 Decimal expansion of 8 * exp(-9*Pi/8) * 2^(3/8).

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

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} A022622(k) / exp(k*Pi).

Example

0.30272817119509352481073796893398211624...

Mathematica

First[RealDigits[8*2^(3/8)*Exp[(-9*Pi)/8], 10, 100]]

Prog

(PARI) 8 * exp(-9/8 * Pi) * 2^(3/8)

Crossrefs

Cf. A022622.

Sequence in context: A208764 A209129 A368479 * A282694 A374062 A011075

Adjacent sequences: A388342 A388343 A388344 * A388346 A388347 A388348

Keyword

nonn,cons

Author

Simon Plouffe, Sep 15 2025

Status

approved