2125035domain: NAppears in sequencesIncorrect duplicate of A226508.at n=5A121515Largest k such that k <= 81*(number of digits of k^n)*(number of digits of k^(n+1)).at n=24A130179Number of additive cyclic codes over GF(4) of length n.at n=17A143695a(n) = Sum_{i=3^n..3^(n+1)-1} i.at n=6A226508