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 A015982 #13 Dec 20 2018 15:40:51 %S A015982 166,176,198,265,275,297,364,374,396,463,473,495,549,562,572,594,639, %T A015982 648,661,671,693,738,747,760,770,792,837,846,891,929,936,945,990,1396, %U A015982 1486,1576,1666,1697,1756,1787,1791,1793,1796,1846,1877 %N A015982 Five iterations of Reverse and Add are needed to reach a palindrome. %C A015982 The number of iterations starts at 1, so palindromes (cf. A002113) are not excluded. The corresponding sequence excluding palindromes is A065210. %H A015982 <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a> %Y A015982 Cf. A002113, A065210. %K A015982 nonn,base %O A015982 1,1 %A A015982 _Robert G. Wilson v_ %E A015982 a(30) corrected by _Sean A. Irvine_, Dec 20 2018 %E A015982 Offset set to 1 by _Alois P. Heinz_, Dec 20 2018