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| n | a(n) |
|---|---|
| 4 | 0 |
| 5 | 2 |
| 6 | 5 |
| 7 | 10 |
| 8 | 18 |
| 9 | 31 |
| 10 | 52 |
| 11 | 86 |
| 12 | 141 |
| 13 | 230 |
| 14 | 374 |
| 15 | 607 |
| 16 | 984 |
| 17 | 1594 |
| 18 | 2581 |
| 19 | 4178 |
| 20 | 6762 |
| 21 | 10943 |
| 22 | 17708 |
| 23 | 28654 |
| 24 | 46365 |
| 25 | 75022 |
| 26 | 121390 |
| 27 | 196415 |
| 28 | 317808 |
| 29 | 514226 |
| 30 | 832037 |
| 31 | 1346266 |
| 32 | 2178306 |
| 33 | 3524575 |
| 34 | 5702884 |
| 35 | 9227462 |
| 36 | 14930349 |
| 37 | 24157814 |
| 38 | 39088166 |
| 39 | 63245983 |
| 40 | 102334152 |
| 41 | 165580138 |
[0,2,5,10,18,31,52,86,141,230,374,607,984,1594, 2581,4178,6762,10943,17708,28654,46365,75022, 121390,196415,317808,514226,832037,1346266, 2178306,3524575,5702884,9227462,14930349,24157814, 39088166,63245983,102334152,165580138] |