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 A279225 #12 Jan 24 2018 07:56:03 %S A279225 1,2,3,4,7,10,13,16,22,30,38,46,58,74,90,106,129,158,190,222,264,314, %T A279225 370,426,495,580,674,772,886,1024,1174,1332,1512,1724,1961,2210,2494, %U A279225 2818,3180,3558,3984,4468,5003,5572,6202,6918,7698,8530,9440,10466,11589 %N A279225 Expansion of Product_{k>=1} 1/(1 - x^(k^2))^2. %C A279225 Number of partitions of n into squares of 2 kinds. - _Ilya Gutkovskiy_, Jan 23 2018 %H A279225 Vaclav Kotesovec, <a href="/A279225/b279225.txt">Table of n, a(n) for n = 0..10000</a> %F A279225 a(n) ~ exp(3 * Pi^(1/3) * Zeta(3/2)^(2/3) * n^(1/3) / 2^(2/3)) * Zeta(3/2) / (8 * sqrt(3) * Pi^2 * n^(3/2)). - _Vaclav Kotesovec_, Dec 29 2016 %t A279225 nmax = 100; CoefficientList[Series[Product[1/(1 - x^(k^2))^2, {k, 1, nmax}], {x, 0, nmax}], x] %Y A279225 Cf. A001156, A103265, A279226, A279227. %K A279225 nonn %O A279225 0,2 %A A279225 _Vaclav Kotesovec_, Dec 08 2016