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| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 3 |
| 5 | 9 |
| 6 | 16 |
| 7 | 27 |
| 8 | 46 |
| 9 | 76 |
| 10 | 123 |
| 11 | 207 |
| 12 | 335 |
| 13 | 545 |
| 14 | 882 |
| 15 | 1428 |
| 16 | 2311 |
| 17 | 3740 |
| 18 | 6051 |
| 19 | 9791 |
| 20 | 15842 |
| 21 | 25633 |
| 22 | 41475 |
| 23 | 67108 |
| 24 | 108583 |
| 25 | 175691 |
| 26 | 284274 |
| 27 | 459965 |
| 28 | 744239 |
| 29 | 1204204 |
| 30 | 1948443 |
| 31 | 3152647 |
| 32 | 5101090 |
| 33 | 8253737 |
[1,3,9,16,27,46,76,123,207,335,545,882,1428,2311, 3740,6051,9791,15842,25633,41475,67108,108583, 175691,284274,459965,744239,1204204,1948443, 3152647,5101090,8253737] |