Position of A002110(n) in A005117.

Terms

a(0) =1a(1) =2a(2) =5a(3) =19a(4) =129a(5) =1405a(6) =18262a(7) =310347a(8) =5896728a(9) =135624240a(10) =3933101824a(11) =121926157641