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

Terms

a(0) =1a(1) =0a(2) =4a(3) =-4a(4) =16a(5) =-28a(6) =72a(7) =-148a(8) =336a(9) =-716a(10) =1560a(11) =-3332a(12) =7136a(13) =-15164a(14) =32168a(15) =-67956a(16) =143216a(17) =-300972a(18) =631096a(19) =-1320420a(20) =2757376a(21) =-5747740a(22) =11961544a(23) =-24855124a(24) =51574416a(25) =-106877068a(26) =221210712a(27) =-457334468a(28) =944495136a(29) =-1948642556