52525

Appears in sequences

• Numerators of continued fraction convergents to sqrt(26).at n=4A041040
• Composite palindromes with only palindromic prime factors whose sum is palindromic (counted with multiplicity).at n=17A046357
• Palindromes with exactly 4 palindromic prime factors (counted with multiplicity).at n=16A046378
• Palindromes of the form 4n + 1 where n is also a palindrome. Palindromes arising in A083831.at n=11A083832
• Smallest palindromic multiple of n in which the digit string of n appears as sandwiched between at least a pair of digits, or 0 if n = 10k or no such number exists.at n=24A084043
• a(n) = 10*a(n-1) + a(n-2), starting with a(0) = 1 and a(1) = 5.at n=5A088320
• Palindromic primes in base 6 (written in base 6).at n=24A117701
• Array read by antidiagonals: see A128195 for details.at n=33A126062
• a(n) = (2*n + 1)*(a(n - 1) + 2^n) for n >= 1, a(0) = 1.at n=5A128195
• Numbers k such that k and k^2 use only the digits 2, 5, 6, 7 and 8.at n=31A137111
• Number of binary strings of length n with no substrings equal to 0000, 0011, or 1011.at n=25A164429
• a(n) = 1 + 4*n*(1 + 2*n^2)/3.at n=27A171272
• Zeroless numbers n such that n and n - (product of digits of n) are both palindromes.at n=36A229761
• Palindromes of the form 4n + 1 that are divisible by 5.at n=26A256704
• a(n) = n * (7*binomial(n, 2) + 1).at n=25A329530