|
|
A137046
|
|
Numbers k such that k and k^2 use only the digits 1, 4, 5, 6 and 7.
|
|
1
|
|
|
1, 4, 74, 76, 746, 6454, 6754, 7466, 64476, 67466, 67576, 74476, 74616, 644574, 664166, 667576, 675771, 717466, 751776, 4176776, 6455746, 6746454, 7151616, 7174616, 7467574, 64154154, 64556654, 66461754, 66751454, 67651616, 67651716, 74474476, 417751666, 664615766, 664647776, 667567716, 674174766, 674667116, 715167576, 717464116
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Generated with DrScheme.
|
|
LINKS
|
|
|
EXAMPLE
|
745764545654154^2 = 556164757554746745767777455716.
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
|
|
STATUS
|
approved
|
|
|
|