A084013(n)/n.

Terms

a(0) =1a(1) =11a(2) =37a(3) =528a(4) =10001a(5) =33517a(6) =143143a(7) =2637514a(8) =11118889a(9) =100000001a(10) =909109091a(11) =33333516667a(12) =76925323077