1121122

Appears in sequences

• List of Lyndon words on {1,2} sorted first by length and then lexicographically.at n=31A102659
• Successive generations of an alternating Kolakoski rule.at n=6A111090
• Numbers that eventually reach 1 under "x -> sum of 5th power of digits of x".at n=11A219112
• The word 1 belongs to the sequence, and whenever a word w belongs to the sequence, then the words consisting of 1's and 2's whose run lengths transform equals w also belong to the sequence.at n=28A376637