Expansion of Product_{k>=0} 1/(1 + x^(4*k+1))^(4*k+1).

Terms

a(0) =1a(1) =-1a(2) =1a(3) =-1a(4) =1a(5) =-6a(6) =6a(7) =-6a(8) =6a(9) =-15a(10) =30a(11) =-30a(12) =30a(13) =-43a(14) =88a(15) =-123a(16) =123a(17) =-140a(18) =250a(19) =-385a(20) =455a(21) =-476a(22) =678a(23) =-1098a(24) =1413a(25) =-1564a(26) =1913a(27) =-2918a(28) =4048a(29) =-4707