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 A039801 #15 Feb 27 2021 04:38:11 %S A039801 1,-1,-1,1,1,1,0,-1,-2,-2,-1,-1,0,2,4,4,5,5,5,2,1,-2,-5,-8,-11,-14, %T A039801 -17,-18,-20,-18,-18,-11,-9,-1,4,15,22,34,41,54,61,70,77,83,87,87,86, %U A039801 80,76,59,50,27,11,-19,-39,-78,-100,-143,-170,-216,-243,-290,-316 %N A039801 Column 2 of Inverse partition triangle A038498. %Y A039801 Cf. A039800-A039804. %K A039801 sign %O A039801 2,9 %A A039801 _Christian G. Bower_, Feb 15 1999 %E A039801 a(61) onward corrected by _Sean A. Irvine_, Feb 27 2021