3111011

Appears in sequences

• Irregular triangle read by rows: row n lists the strings of the MIU formal system at the n-th level of the tree generated by recursively applying the system rules, starting from the MI string (see comments and example).at n=22A368946
• Irregular triangle read by rows: row n lists (in lexicographical order and with duplicates removed) the strings of the MIU formal system at the n-th level of the tree generated by recursively applying the system rules, starting from the MI string.at n=21A368953