A080459 Trans-Harshad numerals: base-10 numerals that represent positive Harshad numbers in every base in which they occur.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 200, 220, 300, 330, 400, 440, 500, 550, 600, 660, 700, 770, 800, 880, 900, 990, 1000, 1010, 1020, 1050, 1100, 1320, 2000, 2010, 2020, 2040, 2200, 2310, 2640, 3000, 3030, 3060, 3300, 3960

Offset: 1

Author

Matthew Vandermast, Mar 21 2003

Keywords

• base
• nonn

Comments

Harshad, or Niven, numbers are those that are divisible by the sum of their digits; see A005349 for base-10 Harshad numbers.