OFFSET
0,1
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..5000
FORMULA
Equals arcsin(sqrt(2/5)) = arccos(sqrt(3/5)). - Amiram Eldar, Jul 10 2023
EXAMPLE
arctan(sqrt(2/3)) = 0.68471920300...
MATHEMATICA
PROG
(PARI) atan(sqrt(2/3)) \\ G. C. Greubel, Nov 18 2017
(Magma) [Arctan(Sqrt(2/3))]; // G. C. Greubel, Nov 18 2017
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Sep 23 2011
STATUS
approved