Column 0 of triangle A132845.

Terms

a(0) =1a(1) =1a(2) =3a(3) =13a(4) =73a(5) =466a(6) =3309a(7) =25425a(8) =209717a(9) =1837168a(10) =16995545a(11) =164906160a(12) =1671977735a(13) =17635855420a(14) =193014602116