A388251 Decimal expansion of (1/4) * exp(3*Pi/8) * 2^(7/8).

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

Offset

1,2

Links

Table of n, a(n) for n=1..87.

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

Formula

Empirical: Equals Sum_{k>=0} A022574(k) / exp(k*Pi).

Example

1.4893006792051734945257553847768566641...

Mathematica

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

Prog

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

Crossrefs

Cf. A022574.

Sequence in context: A279518 A340721 A096412 * A153109 A198736 A117180

Adjacent sequences: A388248 A388249 A388250 * A388252 A388253 A388254

Keyword

nonn,cons

Author

Simon Plouffe, Sep 15 2025

Status

approved