A360167 - OEIS

A360167

Decimal expansion of csch(Pi).

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

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OFFSET

-1,1

LINKS

Table of n, a(n) for n=-1..103.

Michael I. Shamos, A catalog of the real numbers (2011).

FORMULA

Equals 1/sinh(Pi).

Equals 2/A175315.

Equals (2*e^Pi)/(e^(2*Pi) - 1).

Equals 1/(e^Pi + 1) + 1/(e^Pi - 1).

Equals Sum_{k>=0} 2*e^(-2*Pi*k - Pi).