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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 7 |
| 3 | 49 |
| 4 | 52 |
| 5 | 295 |
| 6 | 369 |
| 7 | 415 |
| 8 | 499 |
| 9 | 502 |
| 10 | 594 |
| 11 | 652 |
| 12 | 760 |
| 13 | 2254 |
| 14 | 4999 |
| 15 | 5002 |
| 16 | 8827 |
| 17 | 10330 |
| 18 | 14877 |
| 19 | 49999 |
| 20 | 50002 |
| 21 | 490150 |
| 22 | 499999 |
| 23 | 500002 |
| 24 | 509949 |
| 25 | 3347109 |
| 26 | 4999999 |
| 27 | 5000002 |
| 28 | 6983470 |
| 29 | 24913494 |
| 30 | 49999999 |
| 31 | 50000002 |
[4,7,49,52,295,369,415,499,502,594,652,760,2254, 4999,5002,8827,10330,14877,49999,50002,490150, 499999,500002,509949,3347109,4999999,5000002, 6983470,24913494,49999999,50000002] |