52125

Appears in sequences

• Palindromes of the form 4n + 1 where n is also a palindrome. Palindromes arising in A083831.at n=10A083832
• Palindromes n such that n+(product of digits of n) gives a larger palindrome.at n=15A114341
• Zeroless numbers n such that n and n - (product of digits of n) are both palindromes.at n=32A229761
• Number of ways to place 4 points on a triangular grid of side n so that no three of these points are vertices of an equilateral triangle of any orientation.at n=7A240441
• Numbers k with nonzero digits such that k +/- the product of digits of k are both palindromes.at n=18A244547
• Palindromes n with nonzero digits such that n +/- the product of digits of n are both palindromes.at n=12A244548
• Palindromes of the form 4n + 1 that are divisible by 5.at n=22A256704
• a(n) = 5^(2*n) * [x^n] Product_{k>=1} 1/(1 - 3*x^k)^(1/5).at n=3A370735