A161018 Decimal expansion of tan(1/9).

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

Offset: 0

Author

Harry J. Smith, Jun 14 2009

Keywords

• cons
• nonn

Comments

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

Examples

			0.111570627833800583726504800249829464502549234127740073111768472507637...
		

Links

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

Crossrefs

Cf. A019432 (continued fraction).

Programs

Mathematica

RealDigits[Tan[1/9], 10, 120][[1]] (* Amiram Eldar, Jun 27 2023 *)

PARI

default(realprecision, 20080); x=10*tan(1/9); for (n=0, 20000, d=floor(x); x=(x-d)*10; write("b161018.txt", n, " ", d));