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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 7 |
| 7 | 8 |
| 8 | 10 |
| 9 | 11 |
| 10 | 13 |
| 11 | 14 |
| 12 | 16 |
| 13 | 17 |
| 14 | 19 |
| 15 | 22 |
| 16 | 23 |
| 17 | 25 |
| 18 | 28 |
| 19 | 31 |
| 20 | 34 |
| 21 | 37 |
| 22 | 43 |
[1,2,3,4,5,7,8,10,11,13,14,16,17,19,22,23,25,28, 31,34,37,43] |