|
|
A173780
|
|
a(n) = largest number k such that k and k * n taken together have distinct digits, or 0 if no such k exists.
|
|
0
|
|
|
0, 48651, 32058, 23715, 18654, 9347, 14076, 12345, 10836, 0, 0, 8946, 7956, 9804, 8469, 9423, 9724, 9603, 9603, 9327, 0, 9765, 8763, 8235, 9486, 9781, 6489, 4635, 8769, 5832, 0, 9846, 5463, 8145, 9862, 2735, 5643, 9165, 7956, 7956, 0, 8712, 7956
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
a(987654320) = 1 is the last nonzero term in sequence.
|
|
LINKS
|
|
|
EXAMPLE
|
a(2) = 48651 because 48651 and 97302 (48651*2) taken together have distinct digits and there exists no larger number with this property.
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|