1017225domain: NAppears in sequencesNumber of n X 3 binary arrays with all 1s connected, a path of 1s from left column to lower right corner, and no 1 having more than two 1s adjacent.at n=15A163705Number of 9-digit numbers whose sum of digits is n.at n=17A289354Number of 9-digit numbers whose sum of digits is n.at n=63A289354