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

Terms

a(0) =1a(1) =1a(2) =5a(3) =16a(4) =50a(5) =163a(6) =524a(7) =1687a(8) =5435a(9) =17503a(10) =56372a(11) =181558a(12) =584741a(13) =1883272a(14) =6065441a(15) =19534921a(16) =62915981a(17) =202633048a(18) =652618802a(19) =2101884691a(20) =6769524932a(21) =21802560343a(22) =70219349555a(23) =226154954935a(24) =728375639564