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

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =12a(5) =27a(6) =62a(7) =137a(8) =304a(9) =663a(10) =1442a(11) =3109a(12) =6676a(13) =14259a(14) =30342a(15) =64321a(16) =135928a(17) =286415a(18) =601962a(19) =1262173a(20) =2640860a(21) =5514731a(22) =11495502a(23) =23923065a(24) =49710272a(25) =103148807a(26) =213754162a(27) =442421397a(28) =914668964a(29) =1888990243