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 A151958 #6 Mar 30 2012 18:51:45 %S A151958 1,1,1,4,7,8,3,14,3,5,3,5,3,5,3,5,3,5,3,3,5,3,3,3,3,3,3,3,3,5,1,3,3,3, %T A151958 3,3,3,1,5,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,1,5,5,5,1,3,3,3,3,3,3,3,3, %U A151958 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 %N A151958 Length of cycle mentioned in A151957. %H A151958 Joseph Myers, <a href="/A151958/b151958.txt">Table of n, a(n) for n=2..1000</a> [From _Joseph Myers_, Aug 21 2009] %H A151958 <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a> %Y A151958 See also A151967, A151968. %K A151958 nonn,base %O A151958 2,4 %A A151958 _Harvey P. Dale_ and _N. J. A. Sloane_, Aug 18 2009 %E A151958 Extended by _Joseph Myers_, Aug 21 2009