Expansion of (1-4x)/(1-8x+11x^2).

Terms

a(0) =1a(1) =4a(2) =21a(3) =124a(4) =761a(5) =4724a(6) =29421a(7) =183404a(8) =1143601a(9) =7131364a(10) =44471301a(11) =277325404a(12) =1729418921a(13) =10784771924a(14) =67254567261a(15) =419404046924