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 A030383 #4 Mar 30 2012 18:56:18 %S A030383 1,1,1,2,1,2,3,4,4,5,5,5,4,4,5,5,5,5,5,5,4,4,5,5,5,5,5,6,5,4,5,4,5,6, %T A030383 5,5,6,5,5,6,7,6,7,8,9,10,11,11,12,13,13,14,14,13,14,14,15,16,16,16, %U A030383 17,17,17,18,18,17,18,18,19,20,20,20,21,21,21 %N A030383 (# 1's)-(# 0's) in first n terms of A030373. %K A030383 nonn %O A030383 1,4 %A A030383 _Clark Kimberling_