123456780domain: NAppears in sequencesSum of terms in row n of A081539.at n=8A081540Lexicographically first sequence of distinct terms such that any set of nine successive digits can be reordered as {d, d+1, d+2, d+3, d+4, d+5, d+6, d+7, d+8}, d being the smallest of the nine digits.at n=44A302504