Expansion of 1/sqrt(1 - 4*x/(1+x)^5).

Terms

a(0) =1a(1) =2a(2) =-4a(3) =-10a(4) =30a(5) =72a(6) =-238a(7) =-580a(8) =1970a(9) =4910a(10) =-16734a(11) =-42750a(12) =144600a(13) =379000a(14) =-1264700a(15) =-3402480a(16) =11160730a(17) =30828070a(18) =-99168820a(19) =-281279030a(20) =885931600a(21) =2580541580a(22) =-7948885910a(23) =-23779051760a(24) =71572652480a(25) =219906488302a(26) =-646332447086