Expansion of g.f. 1/((1-4*x)*(1-7*x)).

Terms

a(0) =1a(1) =11a(2) =93a(3) =715a(4) =5261a(5) =37851a(6) =269053a(7) =1899755a(8) =13363821a(9) =93808891a(10) =657710813a(11) =4608169995a(12) =32273967181a(13) =225984879131