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 A165084 #13 Jun 02 2017 00:33:09 %S A165084 1,0,1,1,1,1,1,1,1,3,1,2,3,2,4,2,5,1,8,6,10,5,13,7,18,7,20,8,25,12,30, %T A165084 13,35,15,43,16,51,20,56,25,63,29,71,33,79,38,89,42,99,48,112,53,123, %U A165084 57,137,63,150,71,164,79,177,87,190,95,210,101,229,109,246,119,263,132,280 %N A165084 Number of cycles of n-digit numbers (including fixed points) under the base-7 Kaprekar map A165071. %H A165084 Joseph Myers, <a href="/A165084/b165084.txt">Table of n, a(n) for n=1..100</a> %H A165084 H. Hanslik, E. Hetmaniok, I. Sobstyl, et al., <a href="http://yadda.icm.edu.pl/baztech/element/bwmeta1.element.baztech-aeb2e2a6-99ca-4268-8f6b-a947b9c04da9">Orbits of the Kaprekar's transformations-some introductory facts</a>, Zeszyty Naukowe Politechniki Śląskiej, Seria: Matematyka Stosowana z. 5, Nr kol. 1945; 2015. %H A165084 <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a> %Y A165084 Cf. A165071, A165076, A165085, A008722. %Y A165084 In other bases: A004526 (base 2, adjusted to start 1, 0, 0, 1, 1, ...), A165006 (base 3), A165025 (base 4), A165045 (base 5), A165064 (base 6), A165103 (base 8), A165123 (base 9), A164731 (base 10). %K A165084 base,nonn %O A165084 1,10 %A A165084 _Joseph Myers_, Sep 04 2009