Number of digits in n^(n^(n-1)).

Terms

a(0) =1a(1) =1a(2) =5a(3) =39a(4) =437a(5) =6051a(6) =99425a(7) =1893917a(8) =41077012a(9) =1000000001a(10) =27011044252a(11) =801840699303