Expansion of sqrt(1-4*x)/(1-3*x).

Terms

a(0) =1a(1) =1a(2) =1a(3) =-1a(4) =-13a(5) =-67a(6) =-285a(7) =-1119a(8) =-4215a(9) =-15505a(10) =-56239a(11) =-202309a(12) =-724499a(13) =-2589521a(14) =-9254363a(15) =-33111969a(16) =-118725597a(17) =-426892131a(18) =-1539965973a(19) =-5575175319a(20) =-20260052337a(21) =-73908397851a(22) =-270657727593a(23) =-994938310059