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 A133936 #3 Jul 03 2016 00:15:23 %S A133936 0,2,6,4,20,0,42,8,18,0,110,0,156,0,0,16,272,0,342,0,0,0,506,0,100,0, %T A133936 54,0,812,0,930,32,0,0,0,0,1332,0,0,0,1640,0,1806,0,0,0,2162,0,294,0, %U A133936 0,0,2756,0,0,0,0,0,3422,0,3660,0,0,64,0,0,4422,0,0,0,4970,0,5256,0,0,0,0,0 %N A133936 Number of times prime powers occur in the columns of tables A133232 and A133233. %F A133936 a(n) = if A014963*A100994<n then 0 else A014963*A100994-n %o A133936 (Excel) =if(A014963*A100994<column();0;A014963*A100994-column()) %Y A133936 Cf. A014963, A100994, A133232, A133233. %K A133936 nonn %O A133936 1,2 %A A133936 _Mats Granvik_, Jan 21 2008