A307178 - OEIS

A307178

Decimal expansion of coth(1/2).

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

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OFFSET

1,1

COMMENTS

By the Lindemann-Weierstrass theorem, this constant is transcendental. - Charles R Greathouse IV, May 14 2019

LINKS

Table of n, a(n) for n=1..120.

Index entries for transcendental numbers

FORMULA

Equals (exp(1)+1)/(exp(1)-1).

Equals (BesselI(3/2,1/2)/BesselI(1/2,1/2))+2.

Equals BesselI(-1/2,1/2)/BesselI(1/2,1/2).