OFFSET
1,2
COMMENTS
In base n representation of a(n) all digits are distinct; this is not the case in all base b representations where b is smaller than n. And for numbers m that are smaller than a(n) exists at least one b such that in base b representation of m all digits are distinct.
LINKS
Michael S. Branicky, Table of n, a(n) for n = 1..45
EXAMPLE
a(16)=3013 = 101111000101 [b=2] = 11010121 [b=3] = 233011 [b=4] = 44023 [b=5] = 21541 [b=6] = 11533 [b=7] = 5705 [b=8] = 4117 [b=9] = 3013 [b=10] = 229A [b=11] = 18B1 [b=12] = 14AA [b=13] = 1153 [b=14] = D5D [b=15] = BC5 [b=16] distinct digits.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Oct 09 2006
EXTENSIONS
a(37) and beyond from Michael S. Branicky, Jun 16 2022
STATUS
approved