|
| |
|
|
A113929
|
|
Numbers n such that sigma(n) and phi(n) are both palindromes.
|
|
0
| |
|
|
1, 2, 3, 4, 5, 7, 2881, 15456, 20930, 26461, 26772, 43262, 135536, 271171, 2118161, 2362081, 2545951, 2779321, 4236322, 6354483, 12936656, 28666681, 221782512, 253676851, 259202401, 259828451, 276025121, 276949721, 437593059, 472911836
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|