Expansion of 1/(1-4*x)^(13/2).

Terms

a(0) =1a(1) =26a(2) =390a(3) =4420a(4) =41990a(5) =352716a(6) =2704156a(7) =19315400a(8) =130378950a(9) =840219900a(10) =5209363380a(11) =31256180280a(12) =182327718300