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

Terms

a(0) =1a(1) =-1a(2) =1a(3) =-1a(4) =1a(5) =-1a(6) =1a(7) =-1a(8) =1a(9) =-1a(10) =1a(11) =-1a(12) =1a(13) =-1a(14) =1a(15) =-1a(16) =0a(17) =1a(18) =-2a(19) =3a(20) =-4a(21) =5a(22) =-6a(23) =7a(24) =-8a(25) =9a(26) =-10a(27) =11a(28) =-12a(29) =13