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 A165117 #6 Jun 02 2025 02:03:34 %S A165117 16,48,320,400,2256,3712,3856,5168,5312,5456,34960,40080,42240,49520, %T A165117 55360,183696,250592,308992,322096,323392,388992,419888,440192,446096, %U A165117 448688,454592,505792,511696,512992,3496800,3916640,31596672,35193008 %N A165117 Consider the base-9 Kaprekar map n->K(n) defined in A165110. Sequence gives numbers belonging to cycles of length greater than 1. %C A165117 Initial terms in base 9: 17, 53, 385, 484, 3076, 5074, 5254, 7072, 7252, 7432. %H A165117 Joseph Myers, <a href="/A165117/b165117.txt">Table of n, a(n) for n=1..7548</a> %H A165117 <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a> %Y A165117 Cf. A165110, A165118, A165114, A165115, A165119, A165121, A165128. %Y A165117 In other bases: Empty (base 2), A165000 (base 3), A165019 (base 4), A165039 (base 5), A165058 (base 6), A165078 (base 7), A165097 (base 8), A099010 (base 10). %K A165117 base,nonn %O A165117 1,1 %A A165117 _Joseph Myers_, Sep 04 2009