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 A165045 #13 Jun 02 2017 00:32:55 %S A165045 1,1,1,1,1,1,1,1,1,1,2,1,3,2,6,3,9,2,14,2,16,4,23,4,26,4,30,5,36,7,40, %T A165045 11,54,11,68,14,77,16,83,18,95,19,107,25,126,27,144,29,150,30,160,33, %U A165045 188,35,196,41,209,42,238,46,247,50,257,63,313,64,367,78,378,82,397,91 %N A165045 Number of cycles of n-digit numbers (including fixed points) under the base-5 Kaprekar map A165032. %H A165045 Joseph Myers, <a href="/A165045/b165045.txt">Table of n, a(n) for n=1..100</a> %H A165045 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 A165045 <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a> %Y A165045 Cf. A165032, A165037, A165046, A008617. %Y A165045 In other bases: A004526 (base 2, adjusted to start 1, 0, 0, 1, 1, ...), A165006 (base 3), A165025 (base 4), A165064 (base 6), A165084 (base 7), A165103 (base 8), A165123 (base 9), A164731 (base 10). %K A165045 base,nonn %O A165045 1,11 %A A165045 _Joseph Myers_, Sep 04 2009