This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A195790 #28 Jul 14 2025 14:20:33
%S A195790 0,9,9,6,6,8,6,5,2,4,9,1,1,6,2,0,2,7,3,7,8,4,4,6,1,1,9,8,7,8,0,2,0,5,
%T A195790 9,0,2,4,3,2,7,8,3,2,2,5,0,4,3,1,4,6,4,8,0,1,5,5,0,8,7,7,6,8,1,0,0,2,
%U A195790 7,7,4,7,4,4,7,5,5,0,6,5,4,4,2,0,6,1,2,6,2,4,4,3,4,2,8,6,3,7,1,5
%N A195790 Decimal expansion of arccot(10).
%H A195790 Sanjar M. Abrarov, Rehan Siddiqui, Rajinder K. Jagpal, and Brendan M. Quine, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL25/Abrarov/abrarov5.html">A New Form of the Machin-like Formula for Pi by Iteration with Increasing Integers</a>, Journal of Integer Sequences, Vol. 25 (2022), Article 22.4.5. See (22) p. 9.
%H A195790 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F A195790 Equals Integral_{x >= 0} exp(-10*x)*sin(x)/x dx. - _Peter Bala_, Nov 05 2019
%F A195790 Equals (Pi+4*arctan( 1758719 / 147153121 ))/32. - _Frank Ellermann_, Mar 14 2020
%F A195790 Equals arcsin(1/sqrt(101)) = arccos(10/sqrt(101)). - _Amiram Eldar_, Jul 11 2023
%e A195790 arccot(10) = 0.099668652491162027378446119878020590243278322504...
%t A195790 (See A195789.)
%t A195790 Join[{0},RealDigits[ArcCot[10],10,120][[1]]] (* _Harvey P. Dale_, Jul 14 2025 *)
%o A195790 (PARI) atan(.1) \\ _Charles R Greathouse IV_, Nov 21 2024
%Y A195790 Cf. A195789.
%K A195790 nonn,cons
%O A195790 0,2
%A A195790 _Clark Kimberling_, Sep 24 2011