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

Terms

a(0) =1a(1) =-1a(2) =-6a(3) =-11a(4) =-15a(5) =-25a(6) =-35a(7) =-41a(8) =-56a(9) =-71a(10) =-79a(11) =-99a(12) =-119a(13) =-129a(14) =-154a(15) =-179a(16) =-191a(17) =-221a(18) =-251a(19) =-265a(20) =-300a(21) =-335a(22) =-351a(23) =-391a(24) =-431a(25) =-449a(26) =-494a(27) =-539a(28) =-559a(29) =-609