707707

Appears in sequences

• Numbers k such that k^2 is palindromic in base 6.at n=35A029990
• Solutions y to x/SOD(x) = y, where x and y are palindromes.at n=12A276144
• After a(1) = 1, the sequence is always extended with the smallest divisor d (not yet present in the sequence) of the last term t. If d doesn't exist, we extend the sequence with tt (t concatenated to itself). If tt doesn't produce a new d, we extend the sequence with ttt, etc. See the Comments section for more details.at n=32A348871