15943230domain: NAppears in sequencesa(n) = 10*3^n.at n=13A005052Diagonal of table A062104.at n=16A062107a(n) = n*(n-1)*9^n.at n=6A128803a(n) = (n^3 + n^2)*3^n.at n=8A129003Cancellation factor in reducing Sum_{k=0...n} n^k/k! to lowest terms.at n=26A214402