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 A018864 #8 Mar 30 2012 18:35:08 %S A018864 0,3,2,6,87,1,5,41,176,9,117,4,13,94,175,8,26,89,152,215,3,30,84,129, %T A018864 174,219,7,16,52,88,133,169,205,241,268,2,38,65,101,128,155,182,209, %U A018864 236,263,6,15,42,69,87,114,141,159,177,204,222,240,267,285,10,28,46,64,82,100 %N A018864 6^a(n) is smallest power of 6 beginning with n. %H A018864 D. Mondot, <a href="/A018864/b018864.txt">Table of n, a(n) for n=1..32699</a> %K A018864 nonn,base %O A018864 1,2 %A A018864 _David W. Wilson_