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

Terms

a(0) =1a(1) =-2a(2) =0a(3) =5a(4) =-7a(5) =-3a(6) =22a(7) =-23a(8) =-24a(9) =92a(10) =-67a(11) =-141a(12) =367a(13) =-152a(14) =-723a(15) =1394a(16) =-100a(17) =-3411a(18) =5005a(19) =1717a(20) =-15138a(21) =16709a(22) =15284a(23) =-63840a(24) =49981a(25) =92983a(26) =-256785a(27) =120800a(28) =485753a(29) =-984138