a(n) = (A083112(n) + 1)/n.

Terms

a(0) =2a(1) =2a(2) =3a(3) =34a(4) =29a(5) =14181a(6) =823a(7) =287162a(8) =383289a(9) =531640009a(10) =3958691a(12) =515847877