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 A266137 #6 Dec 21 2015 16:20:05
%S A266137 1,1,1,3,3,6,10,14,20,33,50,68,106,147,214,325,445,624,916,1259,1780,
%T A266137 2553,3477,4821,6794,9340,12777,17808,24266,32998,45764,61770,83593,
%U A266137 114594,154039,208617,283232,379040,509270,687448,919709,1228319,1650595,2195745
%N A266137 Expansion of Product_{k>=1} 1/(1 - k*(x^(2*k-1))).
%H A266137 Vaclav Kotesovec, <a href="/A266137/b266137.txt">Table of n, a(n) for n = 0..9850</a>
%F A266137 a(n) ~ c * 2^(n/3), where
%F A266137 c = 2684.3207660224428945778151546260301591494083790... if mod(n,3) = 0
%F A266137 c = 2683.9203893332021512699407898064547843826991184... if mod(n,3) = 1
%F A266137 c = 2683.7635451650373491773203224442103370428384569... if mod(n,3) = 2.
%t A266137 nmax=60; CoefficientList[Series[Product[1/(1-k*(x^(2*k-1))), {k, 1, nmax}], {x, 0, nmax}], x]
%Y A266137 Cf. A000009, A006906, A077335, A265951, A266138.
%K A266137 nonn
%O A266137 0,4
%A A266137 _Vaclav Kotesovec_, Dec 21 2015