202200

Appears in sequences

• Łukasiewicz words for the rooted plane binary trees (interpretation d in Stanley's exercise 19) with the last leaf implicit, i.e., these words are given without the last trailing zero, except for the null tree which is encoded as 0.at n=5A071152
• Numbers k such that k and k^2 use only the digits 0, 2, 3, 4 and 8.at n=48A136885
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 6 and 8.at n=53A136904
• Numbers k such that k and k^2 use only the digits 0, 2, 4 and 8.at n=31A136908
• Numbers k such that k^2 has only digits 0, 4 and 8.at n=35A202170