Expansion of (1 - 3*x + 9*x^2 - 7*x^3)/(1 - 2*x - 3*x^2)^(7/2).

Terms

a(0) =1a(1) =4a(2) =30a(3) =140a(4) =665a(5) =2856a(6) =11844a(7) =47160a(8) =182655a(9) =690580a(10) =2560558a(11) =9337692a(12) =33573995a(13) =119246960a(14) =419034360a(15) =1458687312a(16) =5035531563a(17) =17253821340a(18) =58723235970a(19) =198655153620a(20) =668338862499