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 A269972 #7 Apr 09 2021 20:30:41 %S A269972 2,2,1,1,2,1,1,1,4,2,1,3,3,2,1,1,3,2,1,2,3,2,1,1,3,1,3,1,1,2,1,2,1,3, %T A269972 1,1,2,1,2,3,2,3,4,2,1,1,1,1,1,2,2,1,1,1,2,2,3,2,1,5,3,2,1,1,3,2,1,2, %U A269972 1,1,2,1,2,1,1,2,1,2,3,1,1,2,4,3,1,1 %N A269972 Factorial-nested interval sequence of 1/Pi. %C A269972 See A269970 for a definition of factorial-nested interval sequence and guide to related sequences. %Y A269972 Cf. A000142, A269970. %K A269972 nonn,easy %O A269972 1,1 %A A269972 _Clark Kimberling_, Mar 08 2016