A161016 Decimal expansion of tan(1/7).

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

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

			0.143836959436190935280030599135623344987568169673888539330871001653186...
		

Links

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

Crossrefs

Cf. A019430 Continued fraction.

Programs

Mathematica

RealDigits[Tan[1/7],10,120][[1]] (* Harvey P. Dale, Dec 11 2016 *)

PARI

default(realprecision, 20080); x=10*tan(1/7); for (n=0, 20000, d=floor(x); x=(x-d)*10; write("b161016.txt", n, " ", d));