302000

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=30A079436
• Numbers n such that Sum_{k>=1} digits(k)/k = 1 where digits() are the digits of n in base 10, the least significant digit having index 1.at n=10A291256
• a(n) is the smallest number k such that sigma(k) - 2k = 2^n.at n=16A292558