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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 6 |
| 5 | 7 |
| 6 | 8 |
| 7 | 10 |
| 8 | 15 |
| 9 | 21 |
| 10 | 24 |
| 11 | 36 |
| 12 | 49 |
| 13 | 51 |
| 14 | 86 |
| 15 | 116 |
| 16 | 134 |
| 17 | 176 |
| 18 | 284 |
| 19 | 345 |
| 20 | 498 |
| 21 | 544 |
| 22 | 649 |
[2,3,4,6,7,8,10,15,21,24,36,49,51,86,116,134,176, 284,345,498,544,649] |