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 A080428 #9 Feb 15 2021 11:15:14 %S A080428 3,2,3,3,3,3,2,3,3,2,3,3,2,3,3,2,3,3,3,3,2,3,3,2,3,3,3,3,2,3,3,2,3,3, %T A080428 3,3,2,3,3,2,3,3,3,3,2,3,3,2,3,3,2,3,3,2,3,3,3,3,2,3,3 %N A080428 First differences of A079255. %C A080428 Is this the same as the sequence generated by: 1) start with 3; 2) apply 2 -> 33, 3 ->233; 3) iterate? %K A080428 nonn,more %O A080428 1,1 %A A080428 _N. J. A. Sloane_, _Benoit Cloitre_ and _Matthew Vandermast_, Feb 04 2003