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 A321567 #8 Nov 13 2018 12:51:02
%S A321567 1,1,1,2,3,4,6,8,11,16,21,27,38,49,63,84,109,138,180,228,289,369,463,
%T A321567 578,732,911,1128,1407,1741,2140,2646,3243,3967,4861,5924,7196,8767,
%U A321567 10616,12827,15516,18707,22486,27054,32440,38835,46488,55502,66136,78836,93727,111265
%N A321567 Expansion of Product_{1 <= i_1 <= i_2 <= i_3 <= i_4} (1 + x^(i_1*i_2*i_3*i_4)).
%H A321567 Seiichi Manyama, <a href="/A321567/b321567.txt">Table of n, a(n) for n = 0..10000</a>
%F A321567 G.f.: Product_{k>0} (1 + x^k)^A218320(k).
%Y A321567 Product_{1 <= i_1 <= i_2 <= ... <= i_b} (1 + x^(i_1 * i_2 * ... * i_b)): A000009 (b=1), A211856 (b=2), A321359 (b=3), this sequence (b=4).
%Y A321567 Cf. A066806, A218320, A321566.
%K A321567 nonn
%O A321567 0,4
%A A321567 _Seiichi Manyama_, Nov 13 2018