A330062 - OEIS

A330062

Decimal expansion of the solution of 1/x + sech(x) = 1.

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

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..86.

EXAMPLE

x = 1.617499897241320956979283167...

MATHEMATICA

r = x /. FindRoot[1/x + 1/Cosh[x] == 1, {x, 2, 10}, WorkingPrecision -> 210]

RealDigits[r][[1]] (* A330062 *)

Plot[1/x + 1/Cosh[x] - 1, {x, 1, 2}]

CROSSREFS