a(n) = A047848(8, n).

Terms

a(0) =1a(1) =2a(2) =13a(3) =134a(4) =1465a(5) =16106a(6) =177157a(7) =1948718a(8) =21435889a(9) =235794770a(10) =2593742461a(11) =28531167062a(12) =313842837673