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 A295570 #8 Dec 08 2017 15:12:56 %S A295570 3,4,4,3,4,5,5,3,4,5,5,3,4,4,3,4,5,5,3,4,5,6,6,3,4,5,6,6,3,4,4,3,4,5, %T A295570 5,3,4,5,6,6,3,4,5,6,6,3,4,4,3,4,5,5,3,4,5,5,3,4,4,3,4,5,5,3,4,5,6,6, %U A295570 3,4,5,6,6,3,4,4,3,4,5,5,3,4,5,6,6,3,4,5,6,7,7,3,4,5,6,7,7,3,4 %N A295570 Limiting sequence if we start with 2 and successively apply the morphism k -> 3,4,...,k,k+1,k+1 for k=2,3,4,5,.... %C A295570 The morphism sends 2 to 3,3; 3 to 3,4,4; 4 to 3,4,5,5; etc. %C A295570 The rows of A295569 approach this in the limit. %Y A295570 Cf. A295569. %K A295570 nonn %O A295570 1,1 %A A295570 _N. J. A. Sloane_, Nov 29 2017