A292821 - OEIS

A292821

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

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

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OFFSET

1,5

LINKS

Table of n, a(n) for n=1..105.

Index entries for transcendental numbers.

FORMULA

Equals exp(Pi/12) / 2^(3/8).

Equals A259150 / A259149.

Conjecture: Equals Sum_{k>=0} A035457(k) / exp(k*Pi). - Simon Plouffe, Sep 09 2025

EXAMPLE

1.001870943123279886463534087967415218083199719502631259194986391297521...