(k(n)!-j(n)!)/n, where (k!,j!) is the least pair of distinct factorials for which n divides k!-j!.

Terms

a(0) =1a(1) =2a(2) =6a(3) =1a(4) =1a(5) =3a(6) =17a(7) =12a(8) =2a(9) =60a(10) =2a(11) =8a(12) =27912a(13) =51a(14) =40a(15) =6a(16) =7a(17) =1a(18) =6a(19) =30a(20) =34a(21) =1a(22) =1a(23) =4a(24) =24a(25) =13956a(26) =160a(27) =1260a(28) =24a(29) =20