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 A360700 #17 Jul 14 2025 10:06:30 %S A360700 1,2,4,6,8,5,0,2,1,9,8,6,2,9,1,5,8,9,9,2,5,0,3,6,8,8,6,1,0,1,0,9,7,7, %T A360700 6,0,6,4,2,5,8,2,8,5,7,4,2,1,5,4,3,1,5,8,4,9,5,0,4,1,0,9,1,7,8,9,4,3, %U A360700 2,3,9,7,3,9,6,2,2,0,1,6,0,9,1,2,1,6,7,9,3,5,3,7,3,2,1,0,4,1,9,0,2,0,4,8,0 %N A360700 Decimal expansion of arcsec(Pi). %H A360700 Michael I. Shamos, <a href="http://euro.ecom.cmu.edu/people/faculty/mshamos/cat.pdf">A catalog of the real numbers</a> (2011). %F A360700 Equals Pi/2 - arccsc(Pi) = Pi/2 - A360701. %F A360700 Equals arcsin(sqrt(1 - 1/Pi^2)). %F A360700 Equals arctan(sqrt(Pi^2 - 1)). %F A360700 Equals |arcsech(Pi)|. %F A360700 Equals arccos(1/Pi). %e A360700 1.246850219862915899250368861010977606425828574215431584950410917894... %t A360700 RealDigits[ArcSec[Pi], 10, 105][[1]] %Y A360700 Cf. A232272, A232273, A360701. %K A360700 cons,nonn %O A360700 1,2 %A A360700 _Wolfe Padawer_, Feb 16 2023