A388489 Decimal expansion of 64 * exp(-Pi).

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

Offset

1,1

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} A097340(k) / exp(k*Pi).

Example

2.7656907688814239855627351789905927217...

Mathematica

First[RealDigits[64*Exp[-Pi], 10, 100]]

Prog

(PARI) 64 * exp(-Pi)

Crossrefs

Cf. A097340.

Sequence in context: A333205 A011263 A074067 * A110988 A047224 A127817

Adjacent sequences: A388486 A388487 A388488 * A388490 A388491 A388492

Keyword

nonn,cons

Author

Simon Plouffe, Sep 17 2025

Status

approved