102210

Appears in sequences

• Digitally balanced numbers: ternary numbers which have the same number of 0's as 1's as 2's.at n=15A181986
• Numbers <= 10^6 with valid Luhn mod 10 check digit, sorted first by check digit, then lexicographically.at n=25A249855
• Number of subsets of {1..n} containing n such that every subset has a different sum.at n=42A325866