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

1,1

Comments

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

Links

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

Example

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

Crossrefs

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

Sequence in context: A013469 A372178 A246738 * A364397 A214223 A173219

Adjacent sequences: A039930 A039931 A039932 * A039934 A039935 A039936

Keyword

base,nonn

Author

Erich Friedman

Extensions

More terms from Patrick De Geest, Oct 15 1999

Status

approved