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A039936 Smallest k for which k, 2k, ... nk all contain the digit 5. 9
5, 25, 25, 125, 125, 125, 125, 625, 625, 625, 625, 625, 625, 625, 625, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 3125, 15625, 15625, 15625, 15625, 15625, 15625, 15625, 15625, 15625, 15625, 15625 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..10000

EXAMPLE

a(3)=25 since 25, 50, and 75 all contain a 5.

CROSSREFS

Cf. A039932, A039933, A039934, A039935, A039937, A039938, A039939, A039940.

Sequence in context: A192493 A265973 A265928 * A124398 A121003 A121007

Adjacent sequences:  A039933 A039934 A039935 * A039937 A039938 A039939

KEYWORD

base,nonn

AUTHOR

Erich Friedman

EXTENSIONS

More terms from Patrick De Geest, Oct 15 1999

STATUS

approved

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Last modified April 6 20:39 EDT 2020. Contains 333286 sequences. (Running on oeis4.)