122878

Appears in sequences

• Positive numbers k such that k and 7*k are anagrams in base 9 (written in base 9).at n=15A023084
• a(0) = 1, a(1) = 5, a(2) = 13; a(n) = 2*a(n-1) + 2, n > 2.at n=15A060182