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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 5 |
| 4 | 13 |
| 5 | 28 |
| 6 | 54 |
| 7 | 98 |
| 8 | 171 |
| 9 | 291 |
| 10 | 487 |
| 11 | 806 |
| 12 | 1324 |
| 13 | 2164 |
| 14 | 3525 |
| 15 | 5729 |
| 16 | 9297 |
| 17 | 15072 |
[1,5,13,28,54,98,171,291,487,806,1324,2164,3525, 5729,9297,15072] |