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A195727
Decimal expansion of arccot(4).
5
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
0,1
LINKS
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
EXAMPLE
arccot(4) = 0.24497866312686...
MATHEMATICA
(See A195628.)
RealDigits[ArcCot[4], 10, 120][[1]] (* Harvey P. Dale, Jan 09 2015 *)
PROG
(PARI) atan(1/4) \\ G. C. Greubel, Aug 20 2018
(Magma) SetDefaultRealField(RealField(100)); Arccot(4) // G. C. Greubel, Aug 20 2018
CROSSREFS
Cf. A195628.
Sequence in context: A227906 A366974 A346004 * A256701 A340714 A292381
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Sep 23 2011
STATUS
approved