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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 8 |
| 5 | 21 |
| 6 | 45 |
| 7 | 16 |
| 8 | 58 |
| 9 | 84 |
| 10 | 200 |
| 11 | 500 |
| 12 | 32 |
| 13 | 152 |
| 14 | 293 |
| 15 | 748 |
| 16 | 1184 |
| 17 | 3220 |
[2,4,7,8,21,45,16,58,84,200,500,32,152,293,748, 1184,3220] |