Expansion of Product_{k>=1} (1-x^(5*k))/(1-x^(2*k)).

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =2a(5) =-1a(6) =3a(7) =-1a(8) =5a(9) =-2a(10) =6a(11) =-3a(12) =10a(13) =-5a(14) =13a(15) =-7a(16) =19a(17) =-11a(18) =25a(19) =-15a(20) =35a(21) =-22a(22) =45a(23) =-30a(24) =62a(25) =-41a(26) =79a(27) =-55a(28) =105a(29) =-75