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A039933 Smallest k for which k, 2k, ... n*k all contain the digit 2. 9
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 (list; graph; refs; listen; history; text; internal format)
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: A058349 A013469 A246738 * A214223 A173219 A227458

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

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Last modified June 1 09:27 EDT 2020. Contains 334759 sequences. (Running on oeis4.)