Expansion of x/(1 - 7*x - 3*x^2).

Terms

a(0) =0a(1) =1a(2) =7a(3) =52a(4) =385a(5) =2851a(6) =21112a(7) =156337a(8) =1157695a(9) =8572876a(10) =63483217a(11) =470101147a(12) =3481157680a(13) =25778407201a(14) =190892323447