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 A179413 #4 Jul 12 2012 00:39:52 %S A179413 3,4,5,5,6,6,6,7,8,8,8,8,7,8,8,8,8,8,7,7,8,8,8,7,7,6,3,5,5,5,6,8,7,8, %T A179413 8,7,7,7,8,7,8,8,8,7,7,8,8,8,6,6,7,5,6,8,7,7,8,8,8,6,7,7,8,6,6,4,3,4, %U A179413 5,5,6,6,6,7,8,8,8,8,7,8,8,8,8,8,7,7,8,8,8,7,7,6,3,5,5,5,6,8,7 %N A179413 The number of columns with alive cells in the n-th generation of cyclic sequence of patterns given in A179412, played in Conway's Game of Life on the 8x8 toroidal grid. %C A179413 Period 66. The sequence begins (from offset 0) with its lexicographically earliest rotation. %C A179413 The mean value of terms in the whole period of 66 is 6.84848. %H A179413 A. Karttunen, <a href="/A179409/a179409.ijs.txt">J-program for computing the terms of this sequence</a> %e A179413 See illustrations in A179412. In the first four patterns there are alive cells in 3, 4, 5, 5 and 5 columns, thus a(0)=3, a(1)=4, and a(2)=a(3)=5. %Y A179413 See also A179412-A179414. %K A179413 nonn %O A179413 0,1 %A A179413 _Antti Karttunen_, Jul 27 2010