300110

Appears in sequences

• Full Łukasiewicz word for each rooted plane tree (interpretation e in Stanley's exercise 19) encoded by A014486 (or A063171).at n=27A079436
• Expansion of 2*(x^2-9*x+15) / ((1+x)*(1-3*x+x^2)).at n=10A090692
• Irregular triangle read by rows: row n lists all of the distinct derivable strings in the MIU formal system that are n characters long.at n=26A369173