Expansion of 1 / Sum_{n=-oo..oo} x^(n^2).

Terms

a(0) =1a(1) =-2a(2) =4a(3) =-8a(4) =14a(5) =-24a(6) =40a(7) =-64a(8) =100a(9) =-154a(10) =232a(11) =-344a(12) =504a(13) =-728a(14) =1040a(15) =-1472a(16) =2062a(17) =-2864a(18) =3948a(19) =-5400a(20) =7336a(21) =-9904a(22) =13288a(23) =-17728a(24) =23528a(25) =-31066a(26) =40824a(27) =-53408a(28) =69568a(29) =-90248