341721

Appears in sequences

• Least k such that decimal representation of k*n contains only digits 0 and 9.at n=28A096688
• a(n) is the reverse concatenation of divisors of n.at n=33A176558
• a(n) = A176558(A175354(n)) = numbers m as reverse concatenations of divisors of numbers from A175354, where A175354 = numbers k such that reverse concatenations of divisors of k are nonprimes.at n=26A176588