Expansion of (1-x)^(-1)/(1+x+x^2-x^3).

Terms

a(0) =1a(1) =0a(2) =0a(3) =2a(4) =-1a(5) =0a(6) =4a(7) =-4a(8) =1a(9) =8a(10) =-12a(11) =6a(12) =15a(13) =-32a(14) =24a(15) =24a(16) =-79a(17) =80a(18) =24a(19) =-182a(20) =239a(21) =-32a(22) =-388a(23) =660a(24) =-303a(25) =-744a(26) =1708a(27) =-1266a(28) =-1185a(29) =4160