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 A165037 #4 Mar 30 2012 17:28:43 %S A165037 0,8,48,72,392,1992,2232,2616,2856,7488,9992,10712,11432,13736,53712, %T A165037 57432,66216,73056,249992,272312,284832,287432,347336,349936,1831056, %U A165037 6249992,8687336,8785936,9236656,45781056,45874056,46264656,48217776 %N A165037 Consider the base-5 Kaprekar map n->K(n) defined in A165032. Sequence gives numbers belonging to cycles, including fixed points. %C A165037 Initial terms in base 5: 0, 13, 143, 242, 3032, 30432, 32412, 40431, 42411, 214423. %H A165037 Joseph Myers, <a href="/A165037/b165037.txt">Table of n, a(n) for n=1..36814</a> %H A165037 <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a> %Y A165037 Union of A165036 and A165039. Cf. A165032, A165038, A165041, A165043, A165049, A165046. %Y A165037 In other bases: A163205 (base 2), A164998 (base 3), A165017 (base 4), A165056 (base 6), A165076 (base 7), A165095 (base 8), A165115 (base 9), A164716 (base 10). %K A165037 base,nonn %O A165037 1,2 %A A165037 _Joseph Myers_, Sep 04 2009