Column 3 of triangle A132845.

Terms

a(0) =1a(1) =4a(2) =30a(3) =179a(4) =1463a(5) =11104a(6) =99177a(7) =873440a(8) =8495091a(9) =83411515a(10) =875891198a(11) =9369874178a(12) =105309532739