Column 0 of triangle A102916.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =7a(5) =36a(6) =139a(7) =1036a(8) =5711a(9) =56355a(10) =408354a(11) =5045370a(12) =45605881a(13) =679409158a(14) =7390305396a(15) =129195427716