143130

Appears in sequences

• Positive numbers k such that k and 2*k are anagrams in base 5 (written in base 5).at n=29A023061
• a(n) = a(n-1) + 3*a(n-2) - 2*a(n-3) - a(n-4) for n >= 4, where a(0) = 2, a(1) = 4, a(2) = 7, a(3) = 12.at n=18A288317