Expansion of 1/sqrt(1 - 4*x/(1+x)^6).

Terms

a(0) =1a(1) =2a(2) =-6a(3) =-10a(4) =66a(5) =60a(6) =-750a(7) =-236a(8) =8682a(9) =-2098a(10) =-100792a(11) =80286a(12) =1162458a(13) =-1603412a(14) =-13225764a(15) =26767020a(16) =147428498a(17) =-409582818a(18) =-1596563202a(19) =5941802122a(20) =16587101544a(21) =-83014131140a(22) =-161717252990