A161017 - OEIS

%I #15 Jun 27 2023 03:20:21

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

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

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

%N Decimal expansion of tan(1/8).

%C By the Lindemann-Weierstrass theorem, this constant is transcendental. - _Charles R Greathouse IV_, May 13 2019

%H Harry J. Smith, <a href="/A161017/b161017.txt">Table of n, a(n) for n = 0..20000</a>

%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.

%e 0.125655136575130967792678218629774000758665763892225542668866613927255...

%t RealDigits[Tan[1/8], 10, 120][[1]] (* _Amiram Eldar_, Jun 27 2023 *)

%o (PARI) default(realprecision, 20080); x=10*tan(1/8); for (n=0, 20000, d=floor(x); x=(x-d)*10; write("b161017.txt", n, " ", d));

%Y Cf. A019431 (continued fraction).

%K cons,nonn

%O 0,2

%A _Harry J. Smith_, Jun 14 2009