1246421

Appears in sequences

• Palindromes with exactly 3 palindromic prime factors (counted with multiplicity).at n=38A046377
• Numbers n such that n | 9^n + 8^n + 7^n + 6^n + 5^n + 4^n + 3^n + 2^n.at n=15A057284
• a(n) = 10*a(n-1) + A109242(n).at n=3A180153