SLOANE, Neil James Alexander; PLOUFFE, Simon. Palindromic primes: prime numbers whose decimal expansion is a palindrome.. S. A002385. The On-Line Encyclopedia of Integer Sequences! [online]. The OEIS Foundation [cit. 2023-08-31]. S. A002385. Dostupné online. (anglicky)
SLOANE, Neil James Alexander. Numbers whose square is a palindrome. S. A002778. The On-Line Encyclopedia of Integer Sequences! [online]. The OEIS Foundation [cit. 2023-08-31]. S. A002778. Dostupné online. (anglicky)
WILSON, David W. Positive integers which apparently never result in a palindrome under repeated applications of the function A056964(x) = x + (x with digits reversed).. S. A023108. The On-Line Encyclopedia of Integer Sequences [online]. The OEIS Foundation [cit. 2023-08-31]. S. A023108. Dostupné online.
