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 A135907 #3 Mar 30 2012 16:50:47 %S A135907 0,0,0,1,2,3,7,34,190 %N A135907 Independence number of commuting graph of alternating group A_n. %C A135907 The graph is empty for n = 0, 1 and 2, so a(n) = 0 by convention (or should it be 1?). %D A135907 A. Iranmanesh and A. Jafarzadeh, On the commuting graph associated with the symmetric and alternating groups, J. Algebra and Applic., 7 (2008), 129-146. %K A135907 nonn %O A135907 0,5 %A A135907 _N. J. A. Sloane_, Mar 07 2008