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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
OFFSET
1,1
LINKS
EXAMPLE
a(3)=25 since 25, 50, and 75 all contain a 5.
KEYWORD
base,nonn
EXTENSIONS
More terms from Patrick De Geest, Oct 15 1999
STATUS
approved