Expansion of Product_{k>=0} 1/(1 + x^(3*k+1))^(3*k+1).

Terms

a(0) =1a(1) =-1a(2) =1a(3) =-1a(4) =-3a(5) =3a(6) =-3a(7) =-4a(8) =14a(9) =-14a(10) =4a(11) =24a(12) =-44a(13) =31a(14) =37a(15) =-107a(16) =126a(17) =-4a(18) =-208a(19) =329a(20) =-175a(21) =-319a(22) =777a(23) =-704a(24) =-236a(25) =1507a(26) =-1945a(27) =430a(28) =2532a(29) =-4575