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 A015992 #7 Mar 30 2012 17:30:17 %S A015992 167,266,365,464,563,662,761,860,7069,7159,7249,7339,7429,7519,7609, %T A015992 7699,7789,7879,7969,8068,8158,8248,8338,8428,8518,8608,8698,8788, %U A015992 8878,8968,9039,9067,9129,9157,9219,9247,9309,9337,9399,9427,9489 %N A015992 Eleven iterations of Reverse and Add are needed to reach a palindrome. %C A015992 The number of iterations starts at 1, so palindromes (cf. A002113) are not excluded. The corresponding sequence excluding palindromes is A065216. %H A015992 <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a> %Y A015992 A002113, A065216. %K A015992 nonn,base %O A015992 0,1 %A A015992 _Robert G. Wilson v_