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 A165053 #6 Jun 02 2025 01:58:29 %S A165053 0,1,1,1,1,1,2,1,2,4,3,3,4,2,1,2,4,3,3,4,2,1,2,4,3,3,4,2,1,2,4,3,3,4, %T A165053 2,1,2,2,3,1,2,3,2,1,2,3,1,2,3,2,2,3,1,2,1,3,3,3,1,2,2,1,1,1,1,2,3,2, %U A165053 2,2,2,2,3,3,3,1,2,3,3,2,2,3,1,2,3,2,1,2,3,1,1,3,2,2,3,1,2,1,3,3,3,1,3,2,1 %N A165053 Length of preperiodic part of trajectory of n under iteration of the base-6 Kaprekar map in A165051. %H A165053 Joseph Myers, <a href="/A165053/b165053.txt">Table of n, a(n) for n=0..1296</a> %H A165053 <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a> %Y A165053 Cf. A165051, A165054. %Y A165053 In other bases: A164885 (base 2), A164995 (base 3), A165014 (base 4), A165034 (base 5), A165073 (base 7), A165092 (base 8), A165112 (base 9), A151962 (base 10). %K A165053 base,nonn %O A165053 0,7 %A A165053 _Joseph Myers_, Sep 04 2009