1313131

Appears in sequences

• Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,3.at n=6A037582
• Palindromes n such that 4n + 1 is also a palindrome.at n=26A083831
• Palindromes p such that 5p + 1 is also a palindrome.at n=20A083833
• Palindromes n such that 6n + 1 is also a palindrome.at n=20A083835
• Palindromic primes in base 5 (written in base 5).at n=34A117700
• Minimal nested palindromic base-5 primes with seed 3; see Comments.at n=3A262643