A161013 Decimal expansion of tan(1/4).

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

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

			0.255341921221036266504482236490473678204201638800822621740475650258883...
		

Links

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

Crossrefs

Cf. A019427 Continued fraction.

Programs

Mathematica

RealDigits[Tan[1/4],10,120][[1]] (* Harvey P. Dale, May 23 2019 *)

PARI

default(realprecision, 20080); x=10*tan(1/4); for (n=0, 20000, d=floor(x); x=(x-d)*10; write("b161013.txt", n, " ", d));