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 A030372 #6 Jun 26 2025 13:11:36 %S A030372 1,0,1,1,2,1,0,-1,0,1,2,1,2,2,3,3,2,3,2,2,2,3,4,4,4,3,2,3,2,3,3,3,2,1, %T A030372 2,1,0,1,2,3,2,1,0,-1,0,1,2,1,2,3,4,4,4,5,4,4,3,3,4,3,3,4,5,6,6,7,8,7, %U A030372 6,6,7,8,7,6,6,7,6,7,6,7,7,7,7,6,7,8,7,7,8,7 %N A030372 (# 1's)-(# 2's) in first n terms of A030363. %Y A030372 Cf. A030363. %K A030372 sign %O A030372 1,5 %A A030372 _Clark Kimberling_