First column (n=1) of triangle A119937.

Terms

a(0) =3a(1) =32a(2) =135a(3) =3456a(4) =3500a(5) =172800a(6) =694575a(7) =6272000a(8) =6286896a(9) =762048000a(10) =763062300a(11) =129090931200a(12) =129196782000a(13) =129282177024a(14) =517408266375