5185815domain: NAppears in sequencesPalindromes whose perfect deficiency (A109883) is also palindromic.at n=27A110002Palindromes greater than 10 whose sum of proper divisors is also a palindrome greater than 10.at n=30A227228Each term is a palindrome such that the sum of its proper divisors is a palindrome > 1.at n=34A227947