60106

Appears in sequences

• Start with 1, apply 1->12, 21->21, 22->21, 2->2 (for final 2); a(n) = length of n-th term.at n=34A013950
• Numbers that are palindromic in bases 10 and 15.at n=21A029970
• Base-10 palindromes that start with 6.at n=23A043041
• Palindromes of the form 5p + 1 where p is also a palindrome. Palindromes arising in A083833.at n=7A083834
• Palindromes which are sums of two consecutive primes.at n=32A162571