A161014 Decimal expansion of tan(1/5).

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

Offset: 0

Author

Harry J. Smith, Jun 13 2009

Keywords

• cons
• nonn

Comments

By the Lindemann-Weierstrass theorem, this constant is transcendental. - Charles R Greathouse IV, May 13 2019

Examples

			0.202710035508672483321358271647534482626875669651631330047819966890382...
		

Links

• Harry J. Smith, Table of n, a(n) for n = 0..20000
• Index entries for transcendental numbers

Crossrefs

Cf. A019428 Continued fraction.

Programs

Mathematica

RealDigits[Tan[1/5],10,120][[1]] (* Harvey P. Dale, Aug 26 2019 *)

PARI

default(realprecision, 20080); x=10*tan(1/5); for (n=0, 20000, d=floor(x); x=(x-d)*10; write("b161014.txt", n, " ", d));