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

Terms

a(0) =1a(1) =1a(2) =5a(3) =18a(4) =74a(5) =299a(6) =1216a(7) =4941a(8) =20083a(9) =81625a(10) =331760a(11) =1348416a(12) =5480549a(13) =22275332a(14) =90536629a(15) =367980201a(16) =1495631437a(17) =6078896062a(18) =24707275082a(19) =100421102079a(20) =408154995212