|
| |
|
|
A137098
|
|
Numbers n such that n and the square of n use only the digits 2, 4, 5, 7 and 9.
|
|
1
| |
|
|
2, 5, 7, 27, 77, 477, 527, 977, 2227, 5477, 7227, 7277, 22977, 49727, 49777, 54277, 97977, 99727, 99777, 229727, 274727, 495477, 499227, 499277, 724727, 774227, 2792477, 4945477, 4952227, 4957277, 4994777, 5224227, 5224727, 7244277, 7597977, 22299227, 22299277, 22924277, 27299227, 27797977, 47725527, 47955477, 49294277, 49452227, 49957227
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
