OFFSET
1,3
COMMENTS
Also the decimal expansion of cotangent of 40 degrees. - Ivan Panchenko, Sep 01 2014
LINKS
Ivan Panchenko, Table of n, a(n) for n = 1..1000
EXAMPLE
1.19175359259420995870530807186041933693070040770854385365483...
MATHEMATICA
RealDigits[Tan[5*Pi/18], 10, 100][[1]] (* G. C. Greubel, Nov 23 2018 *)
PROG
(PARI) default(realprecision, 100); tan(5*Pi/18) \\ G. C. Greubel, Nov 23 2018
(Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Tan(5*Pi(R)/18); // G. C. Greubel, Nov 23 2018
(Sage) numerical_approx(tan(5*pi/18), digits=100) # G. C. Greubel, Nov 23 2018
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
STATUS
approved