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%I #10 Feb 19 2020 02:58:53
%S 1,4,4,0,12,24,8,16,36,4,64,16,16,24,48,20,60,40,4,48,152,16,80,48,24,
%T 124,88,0,112,56,68,64,116,32,104,176,12,56,112,32,336,104,48,96,176,
%U 24,144,112,64,100,364,32,200,88,8,256,240,32,184,112,156,120,192
%N Expansion of (theta_3(z)*theta_3(15z) + theta_2(z)*theta_2(15z))^2.
%H Jinyuan Wang, <a href="/A028626/b028626.txt">Table of n, a(n) for n = 0..1000</a>
%o (PARI) a(n) = if( n<0, 0, polcoeff( (1 + 2 * x * Ser(qfrep( [ 2, 1; 1, 8], n, 1)))^2, n)); \\ _Jinyuan Wang_, Feb 19 2020
%K nonn
%O 0,2
%A _N. J. A. Sloane_.
%E More terms from _Jinyuan Wang_, Feb 19 2020
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