1222122

Appears in sequences

• k th digit of a(n) = number of different digits within 2 places of k (not including k).at n=25A039987
• k th digit of a(n) is the number of different digits within 3 of k (not including k).at n=24A039989
• Trajectory of the word "211" under the Watanabe tag system {11, 2122} described in A291067 (adapted to the alphabet {1,2}).at n=4A291075