A039937 Smallest k for which k, 2k, ... nk all contain the digit 6.

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

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