Expansion of Product_{n>=1} (1 - 4*x^n)^(1/2).

Terms

a(0) =1a(1) =-2a(2) =-4a(3) =-2a(4) =-6a(5) =-6a(6) =-56a(7) =-158a(8) =-612a(9) =-2070a(10) =-7228a(11) =-25238a(12) =-89646a(13) =-319466a(14) =-1150168a(15) =-4164978a(16) =-15177718a(17) =-55592614a(18) =-204617788a(19) =-756314982a(20) =-2806456898a(21) =-10450497682a(22) =-39040372248a(23) =-146273912858a(24) =-549533738952