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 A359141 #6 Jan 27 2023 08:42:23 %S A359141 1,2,1,1,2,1,1,1,1,2,1,1,1,1,1,1,1,2 %N A359141 First differences of the pancake flipping (or sorting by prefix reversal) sequence A058986. %C A359141 A comment in A058986 implies that the terms are at most 2. Furthermore a zero term seems unlikely. %C A359141 The initial terms consist of runs of 1, 2, 4, and 7 1's separated by 2's, which allows for a large number of extensions. %Y A359141 Cf. A058986. %K A359141 nonn,more %O A359141 1,2 %A A359141 _N. J. A. Sloane_, Jan 26 2023