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A039937 Smallest k for which k, 2k, ... nk all contain the digit 6. 0
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; internal format)
OFFSET

1,1

EXAMPLE

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

CROSSREFS

Sequence in context: A053700 A123615 A053535 * A134112 A071588 A001261

Adjacent sequences:  A039934 A039935 A039936 * A039938 A039939 A039940

KEYWORD

base,nonn

AUTHOR

Erich Friedman (erich.friedman(AT)stetson.edu)

EXTENSIONS

More terms from Patrick De Geest (pdg(AT)worldofnumbers.com), Oct 15 1999.

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Last modified February 16 09:27 EST 2012. Contains 205904 sequences.