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A289674 as a simple table

na(n)
121211
2112212
321211221211
4112212112212
5221222121111
61112212221211
72122212111111
82221211112212
912111122122212
1012221222121111
1122121111112212
12122122212221211
13211111122122212
141111221222122212
1521211221211221211
1621222122212111111
17112212112212112212

[21211,112212,21211221211,112212112212,
 221222121111,1112212221211,2122212111111,
 2221211112212,12111122122212,12221222121111,
 22121111112212,122122212221211,211111122122212,
 1111221222122212,21211221211221211,
 21222122212111111,112212112212112212]