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 A026579 #4 Mar 30 2012 18:56:09 %S A026579 1,1,1,2,7,8,19,34,103,121,341,606,1809,2155,6336,11306,33899,40717, %T A026579 121483,217666,656199,792351,2381512,4280046,12957809,15703156, %U A026579 47419503,85410872,259395664,315180458,954961034,1722900242,5245001951 %N A026579 T(n,[ n/2 ]), T given by A026568. %K A026579 nonn %O A026579 0,4 %A A026579 _Clark Kimberling_