Expansion of (1-5x^2-7x^3-2x^4+x^6)/((1-x)(1-x^3)^2).

Terms

a(0) =1a(1) =1a(2) =-4a(3) =-9a(4) =-11a(5) =-21a(6) =-31a(7) =-35a(8) =-50a(9) =-65a(10) =-71a(11) =-91a(12) =-111a(13) =-119a(14) =-144a(15) =-169a(16) =-179a(17) =-209a(18) =-239a(19) =-251a(20) =-286a(21) =-321a(22) =-335a(23) =-375a(24) =-415a(25) =-431a(26) =-476a(27) =-521a(28) =-539a(29) =-589