A084017(n)/n.

Terms

a(0) =1a(1) =11a(2) =37a(3) =1001a(4) =10001a(5) =33517a(6) =157573a(7) =2637514a(8) =11118889a(9) =100080001a(10) =1819008182a(11) =17500275001a(12) =76944363077