529254

Appears in sequences

• Monotonic ordering of nonnegative differences 9^i-3^j, for 40>= i>=0, j>=0.at n=35A192158
• Number of words either empty or beginning with the first letter of the cyclic n-ary alphabet, where each letter of the alphabet occurs twice and letters of neighboring word positions are equal or neighbors in the alphabet.at n=22A208880