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 A232182 #21 Mar 20 2023 13:40:51 %S A232182 1,0,0,3,8,8,4,8,2,1,8,5,3,8,8,7,2,1,4,1,4,8,4,2,3,9,4,4,9,1,7,1,3,2, %T A232182 2,8,8,2,9,2,1,0,4,4,6,0,5,9,4,8,7,0,5,7,4,7,2,9,7,1,2,8,2,4,1,0,8,0, %U A232182 1,5,1,9,1,3,8,3,3,9,5,3,1,6,5,6,0,9,1,5,5,5,6,0,1,8,0,9,8,6,2,9,2,7,7,8,0 %N A232182 Decimal expansion of the arctan of Pi/2. %F A232182 Equals A019669 - A232247. [_Bruno Berselli_, Nov 20 2013] %e A232182 Equals 1.00388482185388721414842394491713228829210446059487057472971... %p A232182 evalf(arctan(Pi/2)) ; %t A232182 RealDigits[ArcTan[Pi/2],10,120][[1]] (* _Harvey P. Dale_, Jan 31 2015 *) %Y A232182 Cf. A019669, A232247. %K A232182 cons,nonn %O A232182 1,4 %A A232182 _R. J. Mathar_, Nov 20 2013