A292824 Decimal expansion of Product_{k>=1} (1 - exp(-Pi*(2*k-1))).

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

Offset

0,1

Links

Table of n, a(n) for n=0..105.

Formula

Equals 2^(1/8) * exp(-Pi/24).

Equals A259148 / A259149.

Conjecture: Equals Sum_{k>=0} A081362(k) / exp(k*Pi). - Simon Plouffe, Sep 09 2025

Example

0.956708725113587003449038717361890724715615702454393013400916466527611...

Mathematica

RealDigits[2^(1/8) * E^(-Pi/24), 10, 120][[1]]

Crossrefs

Cf. A259148, A292820, A292828.

Cf. A292823, A292825, A292826.

Cf. A081362.

Sequence in context: A388502 A388668 A388792 * A388932 A388671 A388477

Adjacent sequences: A292821 A292822 A292823 * A292825 A292826 A292827

Keyword

nonn,cons

Author

Vaclav Kotesovec, Sep 24 2017

Status

approved