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A039937 Smallest k for which k, 2k, ... nk all contain the digit 6. 9
6, 63, 563, 1563, 1632, 3216, 12316, 23266, 66321, 66321, 76923, 76923, 156328, 280692, 566331, 566331, 566331, 2307692, 2307692, 2307692, 2307692, 2307692, 2307692, 2307692, 2307692, 11533664, 23306676, 23306676, 23306676, 23306676 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(197) > 10^12. - Giovanni Resta, Apr 27 2017

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..196

EXAMPLE

a(2)=63 since 63 and 126 contain a 6.

CROSSREFS

Cf. A039932, A039933, A039934, A039935, A039936, A039938, A039939, A039940.

Sequence in context: A053535 A268220 A272495 * A134112 A071588 A001261

Adjacent sequences:  A039934 A039935 A039936 * A039938 A039939 A039940

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 6 04:15 EDT 2020. Contains 334859 sequences. (Running on oeis4.)