A039936 Smallest k for which k, 2k, ... nk all contain the digit 5.

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

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