82728

Appears in sequences

• Palindromes with exactly 7 prime factors (counted with multiplicity).at n=13A046333
• Palindromes with exactly 7 palindromic prime factors (counted with multiplicity).at n=0A046381
• Smallest palindrome with exactly n palindromic prime factors (counted with multiplicity), and no other prime factors.at n=7A046385
• 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=26A084043
• Palindromes sandwiched between twin primes.at n=14A113838
• Number of 1-sided strip polycairos with n cells.at n=12A151535
• Expansion of (1+x-x^3) / (1-4*x-x^4-x^5).at n=8A275907
• Zeroless factorials (version 2): a(0) = 1, and for any n > 0, a(n) = noz(1 * noz(2 * ... * noz((n-1) * n))), where noz(n) = A004719(n) omits the zeros from n.at n=13A321475