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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 8 |
| 6 | 10 |
| 7 | 20 |
| 8 | 23 |
| 9 | 40 |
| 10 | 46 |
| 11 | 92 |
| 12 | 115 |
| 13 | 184 |
| 14 | 230 |
| 15 | 460 |
| 16 | 920 |
[1,2,4,5,8,10,20,23,40,46,92,115,184,230,460,920] |