n^a(n) is the smallest power of n (with a(n) > 1) which starts with n.

Terms

a(0) =2a(1) =8a(2) =18a(3) =6a(4) =24a(5) =10a(6) =20a(7) =11a(8) =22a(9) =2a(10) =26a(11) =14a(12) =10a(13) =8a(14) =92a(15) =6a(16) =166a(17) =5a(18) =19a(19) =11a(20) =60a(21) =39a(22) =48a(23) =51a(24) =94a(25) =42a(26) =467a(27) =86a(28) =14a(29) =66