221222

Appears in sequences

• k th digit of a(n) is the number of different digits within 3 of k (not including k).at n=20A039989
• k th digit of a(n) is the number of different digits within 4 of k (not including k).at n=19A039990
• Reversed shortest (x+1,2x)-code of n.at n=35A233137