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 A244568 #8 Jan 24 2019 20:46:24 %S A244568 0,1,1,3,1,5,3,7,1,9,5,5,3,13,7,15,1,17,9,19,20,21,5,23,24,25,26,27, %T A244568 28,29,30,31,32,3,34,35,36,37,38,39,40,41,42,43,5,45,46,47,48,49,50, %U A244568 51,52,53,54,7,56,57,58,59,60,61,62,63,64,65,3,67,68,69 %N A244568 Smallest value s such that n is in the trajectory of the 'Reverse and Add!' sequence starting with s. %H A244568 Alois P. Heinz, <a href="/A244568/b244568.txt">Table of n, a(n) for n = 0..20000</a> %Y A244568 Column k=0 of A244567. %Y A244568 Cf. A001127, A033648, A033670, A006960, A004086, A244569. %K A244568 nonn,look %O A244568 0,4 %A A244568 _Alois P. Heinz_, Jun 30 2014