|
| |
|
|
A136905
|
|
Numbers k such that k and k^2 use only the digits 0, 2, 4, 6 and 9.
|
|
1
|
|
|
|
0, 2, 20, 64, 200, 264, 492, 640, 964, 2000, 2064, 2640, 4902, 4920, 4992, 6400, 9640, 20000, 20602, 20640, 20992, 24992, 26400, 49020, 49200, 49902, 49920, 49992, 64000, 96400, 200000, 206020, 206400, 209920, 209992, 222402, 246962, 249920, 249992, 264000, 490200, 492000, 494262, 494462, 494662, 499002, 499020, 499200, 499902, 499920, 499992
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
COMMENTS
|
Generated with DrScheme.
|
|
|
LINKS
|
Jonathan Wellons, Table of n, a(n) for n = 1..1278
J. Wellons, Tables of Shared Digits
|
|
|
EXAMPLE
|
49642929029462^2 = 2464420402624200949264009444.
|
|
|
MATHEMATICA
|
With[{c={0, 2, 4, 6, 9}}, Select[FromDigits/@Tuples[c, 6], SubsetQ[ c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Sep 21 2017 *)
|
|
|
CROSSREFS
|
Sequence in context: A133217 A001504 A192351 * A230644 A183907 A216609
Adjacent sequences: A136902 A136903 A136904 * A136906 A136907 A136908
|
|
|
KEYWORD
|
base,nonn
|
|
|
AUTHOR
|
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
|
|
|
STATUS
|
approved
|
| |
|
|
