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 A321423 #12 Nov 09 2018 22:03:22
%S A321423 1,1,1,1,1,2,2,2,2,3,4,4,4,5,6,7,7,8,10,11,12,12,14,16,17,20,22,25,27,
%T A321423 29,33,36,39,41,46,52,56,60,65,72,79,84,91,100,109,118,125,136,147,
%U A321423 158,172,185,201,215,232,251,269,287,306,331,357,381,406,436,469,503
%N A321423 Expansion of 1/2 * Product_{0 <= i <= j} (1 + x^(i^2 + j^2)).
%H A321423 Seiichi Manyama, <a href="/A321423/b321423.txt">Table of n, a(n) for n = 0..10000</a>
%F A321423 G.f.: Product_{k>0} (1 + x^k)^A000161(k).
%Y A321423 Cf. A000161, A321380, A321424.
%K A321423 nonn
%O A321423 0,6
%A A321423 _Seiichi Manyama_, Nov 09 2018