Triangle read by rows, the inverse Bell transform of n!*binomial(4,n) (without column 0).

Terms

a(0) =1a(1) =4a(2) =1a(3) =36a(4) =12a(5) =1a(6) =504a(7) =192a(8) =24a(9) =1a(10) =9576a(11) =3960a(12) =600a(13) =40a(14) =1a(15) =229824a(16) =100656a(17) =17160a(18) =1440a(19) =60a(20) =1a(21) =6664896a(22) =3048192a(23) =563976a(24) =54600a(25) =2940a(26) =84a(27) =1a(28) =226606464a(29) =107255232