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 A178930 #16 Mar 31 2012 10:22:30 %S A178930 0,0,0,1,0,0,1,0,1,1,1,1,1,1,2,2,2,2,3,2,3,5,3,4,8,4,5,8,7,8,11,10,11, %T A178930 12,13,15,19,16,21,24,21,24,32,27,34,43,37,39,53,47,54,65,65,68,79,80, %U A178930 90,98,102,114,129,122,138,160,157,172,207,193,211,247,244,262,306,305,329,363,378,399,448,460 %N A178930 Number of semisimple Lie algebras of dimension n. %C A178930 a(n) is also the number of simply-connected semisimple Lie groups. %C A178930 Is a(n) eventually monotonically increasing, and if so, beyond what index? %e A178930 a(3) = 1 since A_1 is the only semisimple Lie algebra of dimension 3. %e A178930 For n=21, the a(21) = 5 such Lie algebras are A_1+A_1+A_1+A_1+A_1+A_1+A_1, A_1+A_1+A_3, A_1+A_2+B_2, B_3, and C_3 %K A178930 nonn %O A178930 0,15 %A A178930 _Andrew Rupinski_, Jan 11 2011