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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 11 |
| 6 | 20 |
| 7 | 33 |
| 8 | 54 |
| 9 | 87 |
| 10 | 142 |
| 11 | 226 |
| 12 | 360 |
| 13 | 571 |
| 14 | 907 |
| 15 | 1438 |
| 16 | 2278 |
| 17 | 3606 |
| 18 | 5708 |
| 19 | 9032 |
| 20 | 14293 |
| 21 | 22614 |
| 22 | 35778 |
| 23 | 56604 |
| 24 | 89550 |
| 25 | 141670 |
| 26 | 224122 |
| 27 | 354560 |
| 28 | 560907 |
| 29 | 887348 |
| 30 | 1403768 |
| 31 | 2220731 |
| 32 | 3513149 |
| 33 | 5557726 |
| 34 | 8792197 |
| 35 | 13909055 |
| 36 | 22003808 |
[1,3,6,11,20,33,54,87,142,226,360,571,907,1438, 2278,3606,5708,9032,14293,22614,35778,56604,89550, 141670,224122,354560,560907,887348,1403768, 2220731,3513149,5557726,8792197,13909055,22003808] |