Expansion of 1 - 3*x - sqrt(1 - 6*x + 5*x^2).

Terms

a(0) =0a(1) =2a(2) =6a(3) =20a(4) =72a(5) =274a(6) =1086a(7) =4438a(8) =18570a(9) =79174a(10) =342738a(11) =1502472a(12) =6656436a(13) =29756910a(14) =134061570a(15) =608072340a(16) =2774495160a(17) =12726088630a(18) =58646299650a(19) =271401086380