39993

Appears in sequences

• Numbers that are palindromic in bases 2 and 10.at n=15A007632
• Palindromes with exactly 2 palindromic prime factors (counted with multiplicity), and no other prime factors.at n=40A046376
• Palindromes with exactly 2 distinct palindromic prime factors.at n=36A046408
• Palindromes expressible as the sum of 3 consecutive palindromes.at n=33A046498
• Numbers such that harmonic mean of digits is 5.at n=25A062183
• Smallest palindrome with digit sum = n.at n=33A062388
• Numbers that are palindromic in base 2 as well as in base 10 (initial zeros may be prepended).at n=47A069024
• Numbers such that RevBinary() = RevDecimal(), where RevDecimal(n) is the decimal reversal of n (A004086) and RevBinary(n) is the binary reversal of n (A030101).at n=21A081434
• Palindromes k such that k + 11 is also a palindrome.at n=26A082275
• a(n) is the odd-length palindrome whose digits up to the center are those of n and whose center digit is equal to the digital root of the product of the factorial of n and the reverse of n.at n=38A082941
• G.f. satisfies A(x) = x*(1+A^2)^2/(1-A+A^2).at n=11A101490
• Positive integers n that are palindromic in base 2 and whose binary representation has the same number of 0's as 1's.at n=23A143905
• Numbers k such that k multiplied by the sum of reciprocals of digits is the digit reversal of k.at n=8A309654
• For any number n with runs in binary expansion (r_w, ..., r_0), let p(n) be the polynomial of a single indeterminate x where the coefficient of x^e is r_e for e = 0..w and otherwise 0, and let q be the inverse of p; a(n) = q(p(n)^2).at n=10A355654