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| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 3 |
| 8 | 3 |
| 9 | 8 |
| 10 | 9 |
| 11 | 21 |
| 12 | 28 |
| 13 | 56 |
| 14 | 81 |
| 15 | 159 |
| 16 | 237 |
| 17 | 444 |
| 18 | 701 |
| 19 | 1273 |
| 20 | 2060 |
| 21 | 3699 |
| 22 | 6099 |
| 23 | 10840 |
| 24 | 18180 |
| 25 | 32079 |
| 26 | 54417 |
| 27 | 95787 |
| 28 | 163868 |
| 29 | 287914 |
| 30 | 496171 |
| 31 | 871270 |
| 32 | 1509676 |
| 33 | 2652068 |
| 34 | 4615810 |
| 35 | 8114578 |
| 36 | 14176261 |
| 37 | 24947471 |
| 38 | 43718822 |
| 39 | 77031659 |
| 40 | 135350915 |
| 41 | 238791685 |
| 42 | 420544851 |
[1,0,1,1,3,3,8,9,21,28,56,81,159,237,444,701,1273, 2060,3699,6099,10840,18180,32079,54417,95787, 163868,287914,496171,871270,1509676,2652068, 4615810,8114578,14176261,24947471,43718822, 77031659,135350915,238791685,420544851] |