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A046668 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 9 |
| 6 | 10 |
| 7 | 11 |
| 8 | 12 |
| 9 | 14 |
| 10 | 15 |
| 11 | 16 |
| 12 | 17 |
| 13 | 18 |
| 14 | 19 |
| 15 | 20 |
| 16 | 21 |
| 17 | 24 |
| 18 | 28 |
| 19 | 32 |
| 20 | 33 |
| 21 | 39 |
[1,2,3,7,9,10,11,12,14,15,16,17,18,19,20,21,24,28, 32,33,39] |