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 A015984 #8 Mar 30 2012 17:30:17 %S A015984 79,88,97,99,182,281,380,779,799,878,889,898,977,988,997,1069,1079, %T A015984 1159,1169,1249,1259,1339,1349,1429,1439,1519,1529,1609,1619,1699, %U A015984 1709,1789,1799,1879,1889,1896,1969,1979,1986,2059,2068,2078,2089 %N A015984 Six iterations of Reverse and Add are needed to reach a palindrome. %C A015984 The number of iterations starts at 1, so palindromes (cf. A002113) are not excluded. The corresponding sequence excluding palindromes is A065211. %H A015984 <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a> %Y A015984 A002113, A065211. %K A015984 nonn,base %O A015984 0,1 %A A015984 _Robert G. Wilson v_