1403041domain: NAppears in sequencesPalindromes of form k^2 + k + 1.at n=11A028414Palindromes n such that 4n + 1 is also a palindrome.at n=30A083831Beginning with 2, smallest palindrome >= the previous term such that every concatenation is a prime.at n=33A088093Palindromic in base 10 and 18.at n=30A248889