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A329937
Decimal expansion of solution of csch x + sech x = 1.
2
1, 3, 9, 0, 1, 4, 8, 2, 7, 2, 3, 1, 1, 1, 9, 2, 6, 8, 7, 8, 3, 8, 5, 7, 9, 5, 3, 1, 6, 1, 0, 1, 7, 5, 0, 4, 9, 6, 2, 3, 3, 6, 6, 7, 1, 0, 6, 6, 3, 7, 2, 8, 9, 9, 5, 6, 2, 4, 6, 0, 8, 7, 2, 6, 7, 8, 6, 1, 0, 8, 5, 0, 7, 8, 3, 3, 2, 2, 9, 5, 1, 7, 8, 5, 7, 8
OFFSET
1,2
FORMULA
Equals arcsech((1/8)*(4 - 4*sqrt(2) - 9*sqrt(5 + 4*sqrt(2)) + (5 + 4*sqrt(2))^(3/2))).
EXAMPLE
x = 1.3901482723111926878385795316101750496233667106...
MATHEMATICA
Solve[1/Sinh[x] + 1/Cosh[x] == 1, x]
Plot[1/Sinh[x] + 1/Cosh[x] - 1, {x, -3, 3}]
CROSSREFS
Cf. A329938, A329939 (Beatty sequences).
Sequence in context: A247042 A274400 A200495 * A272535 A016626 A126321
KEYWORD
nonn,cons,easy
AUTHOR
Clark Kimberling, Jan 02 2020
STATUS
approved