A078243 Smallest multiple of n using only digits 0 and 4.

4, 4, 444, 4, 40, 444, 4004, 40, 444444444, 40, 44, 444, 4004, 4004, 4440, 400, 44404, 444444444, 44004, 40, 40404, 44, 440404, 4440, 400, 4004, 4404444444, 4004, 4404404, 4440, 444044, 4000, 444444, 44404, 40040, 444444444, 444, 44004, 40404

Offset: 1

Author

Amarnath Murthy, Nov 23 2002

Keywords

• base
• nonn

Comments

a(n) = min{A169967(k): k > 1 and A169967(k) mod n = 0}. [Reinhard Zumkeller, Jan 10 2012]

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..998

Crossrefs

Cf. A004290, A078241-A078248, A079339, A096681-A096688.

Programs

Haskell

a078243 n = head [x | x <- tail a169967_list, mod x n == 0]
-- Reinhard Zumkeller, Jan 10 2012

Extensions

More terms from Ray Chandler, Jul 12 2004