Expansion of theta_4(q)^20 in powers of q = exp(Pi i t).

Terms

a(0) =1a(1) =-40a(2) =760a(3) =-9120a(4) =77560a(5) =-497648a(6) =2508000a(7) =-10232640a(8) =34729720a(9) =-100906760a(10) =259114704a(11) =-606957280a(12) =1327461600a(13) =-2738111280a(14) =5341699520a(15) =-9915552192a(16) =17701924600a(17) =-30615844560a(18) =51294999960a(19) =-83279292960a(20) =131880275664a(21) =-204949382400a(22) =312126610080a(23) =-464844224960a(24) =680432137440