1000222

Appears in sequences

• Base 3 numbers whose square is a palindrome in base 3.at n=21A263607
• Ternary numbers consisting of a run of 1's, then a run of 0's, then a run of 2's.at n=22A371055
• Ternary numbers that are concatenated runs A(1)B(1)C(1)A(2)B(2)C(2)...A(k)B(k)C(k), where A(i) is a run of 1's, B(i) a run of 0's, and C(i) a run of 2's, for i = 1..k.at n=23A371105