Derived from von Mangoldt matrix sequence.

Terms

a(0) =1a(1) =1a(2) =4a(3) =27a(4) =64a(5) =3125a(6) =288a(7) =823543a(8) =147456a(9) =4251528a(10) =460800a(11) =285311670611a(12) =111974400a(14) =3251404800a(15) =13436928000