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%I #6 Feb 19 2020 08:30:32
%S 1,8,24,32,24,64,192,272,248,392,752,976,1152,1648,2048,2272,3128,
%T 4128,4440,4648,6064,6656,8128,8480,10112,9416,13552,12512,16384,
%U 15632,21248,17856,26040,24928,30768,28880,37656,34864,42744,41056,49040,48400,57824,49872
%N Expansion of (theta_3(z)*theta_3(19z) + theta_2(z)*theta_2(19z))^4.
%H Jinyuan Wang, <a href="/A028644/b028644.txt">Table of n, a(n) for n = 0..1000</a>
%o (PARI) a(n) = polcoeff((1 + 2*x*Ser(qfrep([2, 1; 1, 10], n, 1)))^4, n); \\ _Jinyuan Wang_, Feb 19 2020
%Y Cf. A028642, A028643.
%K nonn
%O 0,2
%A _N. J. A. Sloane_.
%E More terms from _Jinyuan Wang_, Feb 19 2020
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