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

Terms

a(0) =1a(1) =5a(2) =30a(3) =210a(4) =1555a(5) =11853a(6) =92082a(7) =724950a(8) =5763795a(9) =46172855a(10) =372102306a(11) =3013333458a(12) =24500724241a(13) =199885491275