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

Terms

a(0) =1a(1) =5a(2) =30a(3) =140a(4) =630a(5) =2646a(6) =10710a(7) =41910a(8) =159885a(9) =597025a(10) =2190188a(11) =7914270a(12) =28230020a(13) =99567300a(14) =347720040a(15) =1203777072a(16) =4135047615a(17) =14105322315a(18) =47813634330a(19) =161154659820a(20) =540353553894