Expansion of 1/((1-4x)(1-5x)(1-6x)).

Terms

a(0) =1a(1) =15a(2) =151a(3) =1275a(4) =9751a(5) =70035a(6) =481951a(7) =3216795a(8) =20991751a(9) =134667555a(10) =852639151a(11) =5343198315a(12) =33212784151a(13) =205111785075