745289domain: NAppears in sequencesValues of n such that 9^n ends in n, or expomorphic numbers relative to "base" 9.at n=5A306686Square array A(m,n) (m>=1, n>=1) read by antidiagonals: A(m,n) = (2*n - 1)^^m mod (2*n)^m (see Comments for definition of ^^).at n=50A324017