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A170937
Decimal expansion of Im(tan(1+I)).
1
1, 0, 8, 3, 9, 2, 3, 3, 2, 7, 3, 3, 8, 6, 9, 4, 5, 4, 3, 4, 7, 5, 7, 5, 2, 0, 6, 1, 2, 1, 1, 9, 7, 1, 7, 2, 1, 3, 4, 4, 9, 6, 7, 5, 2, 7, 4, 7, 5, 3, 8, 9, 8, 5, 6, 3, 1, 9, 7, 2, 2, 0, 4, 2, 5, 3, 8, 9, 5, 6, 0, 9, 8, 1, 2, 0, 7, 8, 6, 0, 0, 6, 2, 4, 3, 9, 2, 9, 1, 3, 2, 9, 7, 7, 6, 3, 3, 0, 0
OFFSET
1,3
REFERENCES
L. V. Ahlfors, Complex Analysis, McGraw-Hill, 3rd ed., p. 44.
FORMULA
Equals sinh(2)/(cos(2) + cosh(2)). - Peter Luschny, Apr 23 2024
EXAMPLE
1.0839233273386945434757520612119717213449675274753898563197...
MATHEMATICA
First[RealDigits[Im[Tan[1 + I]], 10, 100]] (* Paolo Xausa, Apr 23 2024 *)
PROG
(PARI) imag(tan(1+I)) \\ Charles R Greathouse IV, Mar 25 2014
CROSSREFS
Cf. A170936.
Sequence in context: A166202 A146482 A019938 * A058265 A357528 A135005
KEYWORD
nonn,cons
AUTHOR
N. J. A. Sloane, Feb 12 2010
STATUS
approved