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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 25 |
| 4 | 52 |
| 5 | 55 |
| 6 | 222 |
| 7 | 252 |
| 8 | 255 |
| 9 | 552 |
| 10 | 555 |
| 11 | 2222 |
| 12 | 5222 |
| 13 | 5252 |
| 14 | 5255 |
| 15 | 22222 |
| 16 | 22252 |
| 17 | 22522 |
| 18 | 22525 |
| 19 | 22555 |
| 20 | 25222 |
| 21 | 52222 |
| 22 | 55222 |
| 23 | 55522 |
| 24 | 55525 |
| 25 | 55552 |
| 26 | 55555 |
| 27 | 222522 |
| 28 | 225222 |
| 29 | 225225 |
| 30 | 225522 |
| 31 | 252222 |
| 32 | 252225 |
| 33 | 522222 |
| 34 | 2225222 |
| 35 | 2225252 |
| 36 | 2225255 |
| 37 | 5222225 |
| 38 | 5222522 |
| 39 | 5225222 |
[2,5,25,52,55,222,252,255,552,555,2222,5222,5252, 5255,22222,22252,22522,22525,22555,25222,52222, 55222,55522,55525,55552,55555,222522,225222, 225225,225522,252222,252225,522222,2225222, 2225252,2225255,5222225,5222522,5225222] |