Least squarefree number > n!.

Terms

a(0) =2a(1) =3a(2) =7a(3) =26a(4) =122a(5) =721a(6) =5042a(7) =40321a(8) =362881a(9) =3628801a(10) =39916801a(11) =479001602a(12) =6227020801a(13) =87178291201