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 A030385 #4 Mar 30 2012 18:56:18 %S A030385 0,1,0,0,0,0,0,0,1,1,0,1,1,2,2,3,4,5,4,3,3,2,2,1,2,1,0,0,0,0,0,0,0,0, %T A030385 0,1,1,1,0,0,0,0,0,0,0,0,0,1,1,1,0,0,1,1,1,2,2,2,3,4,4,5,4,4,3,3,3,2, %U A030385 2,2,1,2,2,1,0,1,1,1,2,2,2,3,3,4,5,5,4,5,5,5 %N A030385 (# 2's)-(# 3's) in first n terms of s=A030373. %K A030385 nonn %O A030385 1,14 %A A030385 _Clark Kimberling_