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 A039830 #10 Jan 05 2023 18:29:47
%S A039830 1,2,4,4,6,16,22,15,19,46,56,34,40,92,106,61,69,154,172,96,106,232,
%T A039830 254,139,151,326,352,190,204,436,466,249,265,562,596,316,334,704,742,
%U A039830 391,411,862,904,474,496,1036,1082,565,589,1226,1276,664,690,1432,1486,771
%N A039830 Number of different coefficient values in expansion of Product_{i=1..n} (1-q^1+q^2-...+(-q)^i).
%H A039830 Seiichi Manyama, <a href="/A039830/b039830.txt">Table of n, a(n) for n = 0..200</a>
%Y A039830 Cf. A039823, A039909.
%K A039830 nonn
%O A039830 0,2
%A A039830 _Olivier Gérard_
%E A039830 a(0)=1 prepended by _Seiichi Manyama_, Jan 05 2023