1771470domain: NAppears in sequencesa(n) = 10*3^n.at n=11A005052Triangle whose (i,j)-th entry is binomial(i,j)*5^(i-j)*9^j.at n=26A038251Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*5^j.at n=22A038295Diagonal of table A062104.at n=14A062107a(n) = 3^n * n*(n + 1).at n=9A116138a(n) = 9^n * n*(n+1).at n=5A116176