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 A164730 #6 May 19 2023 15:29:54 %S A164730 420876,43208766,4332087666,433320876666,43333208766666, %T A164730 4333332087666666,433333320876666666,43333333208766666666, %U A164730 4333333332087666666666,433333333320876666666666 %N A164730 Least element of each cycle of length 7 under the Kaprekar map A151949. %H A164730 Joseph Myers, <a href="/A164730/b164730.txt">Table of n, a(n) for n=1..68</a> %H A164730 <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a> %Y A164730 Cf. A151949, A151959, A099009, A164718, A164720, A164724, A164726, A164728, A164729. %K A164730 base,nonn %O A164730 1,1 %A A164730 _Joseph Myers_, Aug 23 2009