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 A329805 #5 Nov 21 2019 22:16:31
%S A329805 1,1,3,4,10,14,27,39,71,101,170,242,390,551,852,1198,1803,2512,3687,
%T A329805 5101,7351,10088,14289,19472,27208,36810,50790,68262,93200,124453,
%U A329805 168279,223364,299473,395214,525754,690103,911644,1190447,1562449,2030381,2649162,3426591
%N A329805 Expansion of Product_{i>=1, j>=1} (1 + x^(i*j) + x^(2*i*j)).
%F A329805 G.f.: Product_{k>=1} ((1 - x^(3*k)) / (1 - x^k))^A000005(k).
%t A329805 nmax = 41; CoefficientList[Series[Product[((1 - x^(3 k))/(1 - x^k))^DivisorSigma[0, k], {k, 1, nmax}], {x, 0, nmax}], x]
%Y A329805 Cf. A000005, A000726, A006171, A107742, A329467.
%K A329805 nonn
%O A329805 0,3
%A A329805 _Ilya Gutkovskiy_, Nov 21 2019