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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 3 |
| 6 | 5 |
| 7 | 10 |
| 8 | 15 |
| 9 | 28 |
| 10 | 46 |
| 11 | 79 |
| 12 | 120 |
| 13 | 207 |
| 14 | 330 |
| 15 | 540 |
| 16 | 867 |
| 17 | 1428 |
| 18 | 2293 |
| 19 | 3737 |
| 20 | 6009 |
| 21 | 9778 |
| 22 | 15808 |
| 23 | 25630 |
| 24 | 41370 |
| 25 | 67092 |
| 26 | 108483 |
| 27 | 175649 |
| 28 | 284022 |
| 29 | 459938 |
| 30 | 743945 |
| 31 | 1204113 |
| 32 | 1947712 |
| 33 | 3152386 |
| 34 | 5100237 |
| 35 | 8253262 |
| 36 | 13352465 |
| 37 | 21607324 |
| 38 | 34959920 |
[0,0,0,1,3,5,10,15,28,46,79,120,207,330,540,867, 1428,2293,3737,6009,9778,15808,25630,41370,67092, 108483,175649,284022,459938,743945,1204113, 1947712,3152386,5100237,8253262,13352465,21607324, 34959920] |