Expansion of g.f. (1 - theta_4(x))/2 / Product_{n>=1} (1 - x^(2*n))^3.

Terms

a(0) =1a(1) =0a(2) =3a(3) =-1a(4) =9a(5) =-3a(6) =22a(7) =-9a(8) =52a(9) =-22a(10) =111a(11) =-51a(12) =230a(13) =-108a(14) =451a(15) =-222a(16) =861a(17) =-432a(18) =1587a(19) =-819a(20) =2861a(21) =-1501a(22) =5028a(23) =-2691a(24) =8679a(25) =-4707a(26) =14691a(27) =-8089a(28) =24492a(29) =-13638