A195727 Decimal expansion of arccot(4).

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

Offset: 0

Author

Clark Kimberling, Sep 23 2011

Keywords

• nonn
• cons

Examples

			arccot(4) = 0.24497866312686...
		

Links

• G. C. Greubel, Table of n, a(n) for n = 0..10000
• Index entries for transcendental numbers

Crossrefs

Cf. A195628.

Programs

Magma

SetDefaultRealField(RealField(100)); Arccot(4); // G. C. Greubel, Aug 20 2018

Mathematica

(See A195628.)
RealDigits[ArcCot[4],10,120][[1]] (* Harvey P. Dale, Jan 09 2015 *)

PARI

atan(1/4) \\ G. C. Greubel, Aug 20 2018

Formula

Equals Integral_{x >= 0} exp(-4*x)*sin(x)/x dx. - Peter Bala, Nov 05 2019

Equals arcsin(1/sqrt(17)) = arccos(4/sqrt(17)) = arctan(1/4). - Amiram Eldar, Jul 11 2023