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%I #3 Mar 30 2012 16:47:09
%S 1,0,4,0,4,0,0,0,4,0,8,8,0,16,0,8,4,16,4,16,8,0,16,24,0,16,40,0,0,16,
%T 16,16,4,16,40,8,4,16,32,0,8,16,4,32,16,0,64,16,0,0,60,8,40,48,0,48,0,
%U 16,56,48,16,48,64,0,4,64,32
%N Expansion of (theta_3(z)*theta_3(21z)+theta_2(z)*theta_2(21z))^2.
%K nonn
%O 0,3
%A _N. J. A. Sloane_.