2060602domain: NAppears in sequencesPalindromes with exactly 4 palindromic prime factors (counted with multiplicity).at n=22A046378Economical palindromes.at n=10A047739a(n) = 2(5n^2 + 5n + 1)^3.at n=4A109119a(n) = 2*prime(n)^3.at n=25A172190