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 A065212 #17 Dec 08 2024 14:15:04 %S A065212 188,190,197,287,296,386,395,485,584,593,683,692,782,791,881,890,980, %T A065212 1394,1484,1574,1664,1754,1844,1898,1934,1988,1992,1994,1999,2393, %U A065212 2483,2573,2663,2753,2843,2897,2933,2987,2991,2993,2998,3089,3179,3269,3359 %N A065212 Numbers which need seven 'Reverse and Add' steps to reach a palindrome. %C A065212 The number of steps starts at 0, so palindromes (cf. A002113) are excluded. %C A065212 Numbers k such that A033665(k) = 7. - _Andrew Howroyd_, Dec 08 2024 %H A065212 Vincenzo Librandi, <a href="/A065212/b065212.txt">Table of n, a(n) for n = 1..1000</a> %H A065212 <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a> %t A065212 lenQ[n_]:= Length[NestWhileList[# + FromDigits[Reverse[IntegerDigits[#]]]&, n,#!= FromDigits[Reverse[IntegerDigits[#]]]&, 1, 10]] == 8; Select[Range[500], lenQ] (* _Vincenzo Librandi_, Sep 24 2013 *) %Y A065212 Cf. A002113, A015986, A033665, A065206. %K A065212 nonn,base %O A065212 1,1 %A A065212 _Klaus Brockhaus_, Oct 21 2001 %E A065212 Offset changed from 0 to 1 by _Harry J. Smith_, Oct 14 2009