Primal codes of finite permutations on positive integers.

Terms

a(0) =1a(1) =2a(2) =9a(3) =12a(4) =18a(5) =40a(6) =112a(7) =125a(8) =250a(9) =352a(10) =360a(11) =540a(12) =600a(13) =675a(14) =832a(15) =1008a(16) =1125a(17) =1350a(18) =1500a(19) =2176a(20) =2250a(21) =2268a(22) =2352a(23) =2401a(24) =3168a(25) =3969a(26) =4802a(27) =4864a(28) =7488a(29) =7938