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 A361260 #19 Mar 26 2023 17:05:41 %S A361260 8,5,0,5,1,1,2,8,7,7,9,8,0,6,5,9,2,3,7,7,7,9,6,7,1,5,5,2,1,9,2,4,6,9, %T A361260 2,0,6,6,9,8,2,5,9,1,2,6,8,4,2,0,6,8,8,4,0,5,7,6,2,4,5,9,3,9,1,5,9,4, %U A361260 5,8,9,3,7,0,0,8,3,4,6,7,3,1,2,7,1,7,4,3,6,3,7,9,0,5,7,6,4,6,7,8,7,3,1,4,5,0,3,1,6,1,1,4,9,0,2,0,8,2,9,1,5,9,8,2,3,4,7 %N A361260 Maximum latitude in degrees of spherical Mercator projection with an aspect ratio of one, arctan(sinh(Pi))*180/Pi. %C A361260 Widely used as a cutoff line of web maps which use the web Mercator projection. %F A361260 Equals arctan(sinh(Pi))*180/Pi. %F A361260 Equals 360/Pi*arctan(exp(Pi)) - 90. %e A361260 85.05112877980659237779671552192469206698259126842068... %t A361260 RealDigits[ArcTan[Sinh[Pi]]/Degree, 10, 100][[1]] (* _Amiram Eldar_, Mar 06 2023 *) %o A361260 (PARI) atan(sinh(Pi))*180/Pi \\ _Michel Marcus_, Mar 06 2023 %Y A361260 Cf. A334401. %K A361260 nonn,cons %O A361260 2,1 %A A361260 _Donghwi Park_, Mar 06 2023