Expansion of (1-3*x-sqrt(9*x^2-14*x+1))/4.

Terms

a(0) =0a(1) =1a(2) =5a(3) =35a(4) =295a(5) =2765a(6) =27705a(7) =290535a(8) =3148995a(9) =34995065a(10) =396602605a(11) =4566227435a(12) =53259218495a(13) =627982592965