|
|
A137112
|
|
Numbers k such that k and k^2 use only the digits 2, 5, 6, 7 and 9.
|
|
1
|
|
|
5, 25, 26, 27, 75, 76, 77, 275, 277, 525, 526, 527, 725, 976, 2565, 7227, 7275, 7525, 7527, 7565, 7725, 22925, 25676, 27525, 52227, 52725, 72565, 72576, 75277, 97765, 97976, 256227, 256266, 269777, 275676, 276725, 725725, 727525, 759576, 769777, 772527, 792275, 962576, 979777, 2562576, 2562727, 2579275, 2592725, 2767665, 2779525, 2792275
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Generated with DrScheme.
|
|
LINKS
|
|
|
EXAMPLE
|
962579692956725^2 = 926559665292662976572722725625.
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
|
|
STATUS
|
approved
|
|
|
|