a(n) is the number of distinct n-th powers of functions {1, 2, 3, 4, 5, 6} -> {1, 2, 3, 4, 5, 6}.

Terms

a(0) =1a(1) =46656a(2) =13356a(3) =11026a(4) =5721a(5) =12942a(6) =3136a(7) =13806a(8) =5601a(9) =9286a(10) =5952a(11) =13806a(12) =1921a(13) =13806a(14) =6816a(15) =8422a(16) =5601a(17) =13806a(18) =3136a(19) =13806a(20) =4737a(21) =9286a(22) =6816a(23) =13806a(24) =1921a(25) =12942a(26) =6816a(27) =9286a(28) =5601a(29) =13806