A039933 Smallest k for which k, 2k, ... n*k all contain the digit 2.

2, 12, 124, 624, 624, 642, 4062, 4062, 4128, 4128, 23041, 23041, 23041, 23041, 144032, 144032, 144032, 144032, 144032, 144032, 144032, 1201804, 1201804, 1201804, 1276048, 1276048, 1276048, 1276048, 1276048, 1276048, 8020604

Offset: 1

Author

Erich Friedman

Keywords

• base
• nonn

Comments

a(288) > 5*10^11. - Giovanni Resta, Apr 27 2017

Examples

			a(3)=624 since 624, 1248, and 1872 all contain a 2.
		

Links

• Giovanni Resta, Table of n, a(n) for n = 1..287

Crossrefs

Cf. A039932, A039934, A039935, A039936, A039937, A039938, A039939, A039940.

Extensions

More terms from Patrick De Geest, Oct 15 1999