212211

Appears in sequences

• n written in fractional base 3/2.at n=34A024629
• Number of ON cells at n-th stage of three-dimensional version of the cellular automaton A160117 using cubes.at n=35A160379
• List of words over {1,2} with equal numbers of 1's and 2's.at n=23A214218
• a(n) is the least multiple of n which uses only digits 1 and 2. a(n) = -1 if no such multiple exists.at n=56A216478
• Trajectory of the word "211" under the Watanabe tag system {11, 2122} described in A291067 (adapted to the alphabet {1,2}).at n=5A291075
• The largest even integer that can be written with n digits in base 3/2.at n=5A304272
• List of Nyldon words over {1,2}.at n=20A328073
• 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=26A376637
• Representation of n in rational base 3/2.at n=17A383346