a(n) = A047848(6, n).

Terms

a(0) =1a(1) =2a(2) =11a(3) =92a(4) =821a(5) =7382a(6) =66431a(7) =597872a(8) =5380841a(9) =48427562a(10) =435848051a(11) =3922632452a(12) =35303692061a(13) =317733228542