a(n) = A322667(n) + 1.

Terms

a(0) =8a(1) =60a(2) =532a(3) =5100a(4) =50317a(5) =501000a(6) =5003163a(7) =50010000a(8) =500031623a(9) =5000100000a(10) =50000316228a(11) =500001000000