Expansion of ((1-x)/(1-2x))^8.

Terms

a(0) =1a(1) =8a(2) =44a(3) =200a(4) =806a(5) =2984a(6) =10364a(7) =34232a(8) =108545a(9) =332688a(10) =990736a(11) =2878144a(12) =8182432a(13) =22823680a(14) =62595328a(15) =169090048a(16) =450568960a(17) =1185832960a(18) =3085885440a(19) =7947714560a(20) =20275478528a(21) =51272351744a(22) =128605356032a(23) =320145981440a(24) =791358537728