A069522 Smallest multiple of n with digit sum = 3, or 0 if no such number exists, e.g. a(9k)= 0 = a(11k).

3, 12, 3, 12, 30, 12, 21, 120, 0, 30, 0, 12, 10101, 210, 30, 1200, 102, 0, 11001, 120, 21, 0, 2001, 120, 300, 101010, 0, 2100, 2001, 30, 10000011, 12000, 0, 102, 210, 0, 111, 110010, 10101, 120, 0, 210, 100100001, 0, 0, 20010, 10011, 1200, 1100001, 300, 102

Offset: 1

Author

Amarnath Murthy, Apr 01 2002

Keywords

• base
• nonn

Comments

a(9k)=a(11k)=a(41k)=a(73k)=a(79k)=a(101k)=0 - Ray Chandler, Jul 30 2003

a(2^k)=1.2*10^k [From David Brown, Dec 19 2009]

Crossrefs

Cf. A069521.

Formula

a(n) = n*A088392(n) . - R. J. Mathar, Aug 06 2019

Extensions

More terms from Ray Chandler, Jul 30 2003