Column 3 of square array A246072 / n!.

Terms

a(0) =1a(1) =1a(2) =5a(3) =18a(4) =75a(5) =396a(6) =2052a(7) =11586a(8) =71787a(9) =458352a(10) =3103668a(11) =22202874a(12) =164999826a(13) =1281692088a(14) =10371684312a(15) =86973240204a(16) =755908929603