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 A039804 #13 Feb 27 2021 04:38:34 %S A039804 1,-1,-1,0,0,1,1,2,0,0,-1,-1,-2,-2,-2,-4,-1,-2,0,0,3,4,6,6,8,8,10,10, %T A039804 9,9,7,5,2,0,-7,-10,-18,-22,-29,-32,-41,-43,-49,-50,-54,-53,-54,-50, %U A039804 -46,-38,-30,-18,-6,8,25,43,62,82,108,128,155 %N A039804 Column 5 of Inverse partition triangle A038498. %Y A039804 Cf. A039800-A039803. %K A039804 sign %O A039804 5,8 %A A039804 _Christian G. Bower_, Feb 15 1999 %E A039804 a(64) corrected by _Sean A. Irvine_, Feb 27 2021