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 A164724 #6 Jun 02 2025 01:51:46 %S A164724 53955,8733209876622,873332098766622,8764421997755322, %T A164724 87333320987666622,8733333209876666622,873333332098766666622, %U A164724 87333333320987666666622,87764442219997775553222,8733333333209876666666622 %N A164724 Least element of each cycle of length 2 under the Kaprekar map A151949. %H A164724 Joseph Myers, <a href="/A164724/b164724.txt">Table of n, a(n) for n=1..573</a> %H A164724 <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a> %Y A164724 Cf. A151949, A151959, A099009, A164718, A164720, A164726, A164728, A164730, A164723. %K A164724 base,nonn %O A164724 1,1 %A A164724 _Joseph Myers_, Aug 23 2009