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 A269973 #7 Apr 09 2021 20:36:54 %S A269973 3,1,1,2,3,2,1,2,1,1,1,4,2,3,2,2,1,3,1,4,2,1,1,2,2,2,2,2,1,2,1,2,1,1, %T A269973 2,1,1,1,1,3,2,4,1,1,1,3,3,2,1,1,4,2,1,3,2,1,1,3,2,2,1,1,1,1,1,2,6,2, %U A269973 1,2,3,1,1,2,2,2,3,3,1,1,1,2,2,1,1,1 %N A269973 Factorial-nested interval sequence of Pi-3. %C A269973 See A269970 for a definition of factorial-nested interval sequence and guide to related sequences. %Y A269973 Cf. A000142, A269970. %K A269973 nonn,easy %O A269973 1,1 %A A269973 _Clark Kimberling_, Mar 08 2016