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 A039829 #11 Aug 30 2018 03:03:07
%S A039829 2,2,3,4,6,10,13,17,36,48,33,39,86,100,60,68,148,166,95,105,226,248,
%T A039829 138,150,320,346,189,203,430,460,248,264,556,590,315,333,698,736,390,
%U A039829 410,856,898,473,495,1030,1076,564,588,1220,1270
%N A039829 Number of different coefficient values in expansion of Product_{i=1..n} (1 + (-q)^i).
%o A039829 (PARI) a(n) = #vecsort(Vec(prod(i = 1, n, (1 + (-q)^i))), , 8) \\ _David A. Corneth_, Aug 29 2018
%Y A039829 Cf. A039822, A039828.
%K A039829 nonn
%O A039829 1,1
%A A039829 _Olivier Gérard_