51115

Appears in sequences

• Palindromes whose digits do not appear in previous term.at n=40A030285
• Numbers that are palindromic and divisible by 5.at n=34A043040
• Multiples of 5 in which there is no common digit in successive terms.at n=28A083493
• Palindromic Smith numbers.at n=26A098834
• a(n) = ceiling(A117791(n)/2).at n=29A173696
• Expansion of 1/(1 - x - 4*x^2 + 4*x^3 - 2*x^4).at n=14A175713