A388332 Decimal expansion of 2 * exp(-13*Pi/24) * 2^(5/8).

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

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} A022608(k) / exp(k*Pi).

Example

0.56251816489148280679536341014190985836...

Mathematica

First[RealDigits[2*2^(5/8)*Exp[(-13*Pi)/24], 10, 100]]

Prog

(PARI) 2 * exp(-13/24 * Pi) * 2^(5/8)

Crossrefs

Cf. A022608.

Sequence in context: A211394 A060011 A021068 * A286300 A091873 A038690

Adjacent sequences: A388329 A388330 A388331 * A388333 A388334 A388335

Keyword

nonn,cons

Author

Simon Plouffe, Sep 15 2025

Status

approved