|
|
A137052
|
|
Numbers k such that k and k^2 use only the digits 1, 4, 6, 7 and 8.
|
|
1
|
|
|
1, 4, 8, 41, 88, 881, 4141, 6441, 6846, 8478, 8641, 8874, 8878, 41771, 68181, 68474, 68678, 68878, 86478, 88776, 816771, 817181, 846846, 876178, 878488, 881178, 6417776, 6647441, 7866881, 8177678, 8466846, 8761776, 8841181, 41818474, 64168641, 64411776, 66466846, 66871881, 68444641, 81676874, 81768846, 84668641, 84668871, 86116878, 87617776
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Generated with DrScheme.
|
|
LINKS
|
|
|
EXAMPLE
|
874167467867678^2 = 764168761878187848616117111684.
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn,changed
|
|
AUTHOR
|
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
|
|
STATUS
|
approved
|
|
|
|