Characteristic cube divisor of n!: a(n) = A056191(n!).

Terms

a(0) =1a(1) =1a(2) =1a(3) =8a(4) =8a(5) =1a(6) =1a(7) =8a(8) =8a(9) =1a(10) =1a(11) =27a(12) =27a(13) =216a(14) =1000a(15) =1000a(16) =1000a(17) =125a(18) =125a(19) =1a(20) =9261a(21) =74088a(22) =74088a(23) =343a(24) =343a(25) =2744a(26) =74088a(27) =216a(28) =216a(29) =125