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 A307494 #20 Apr 16 2019 15:27:31
%S A307494 1,1,6,30,145,680,3151,14394,65217,293223,1310255,5820697,25725139,
%T A307494 113161286,495659656,2162471602,9399682398,40716499477,175798072996,
%U A307494 756709512011,3247830724594,13901967775738,59352638426839,252778786749676,1074061758972744,4553583433874616,19264461634793094
%N A307494 Expansion of Product_{j>=1} 1/(1 - j*(-1 + Product_{k>=1} 1/(1 - k*x^k))^j).
%F A307494 G.f.: g(g(x) - 1), where g(x) = g.f. of A006906.
%t A307494 nmax = 26; CoefficientList[Series[Product[1/(1 - j (-1 + Product[1/(1 - k x^k), {k, 1, nmax}])^j), {j, 1, nmax}], {x, 0, nmax}], x]
%Y A307494 Cf. A006906, A307127, A307321, A307566.
%K A307494 nonn
%O A307494 0,3
%A A307494 _Ilya Gutkovskiy_, Apr 15 2019