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| n | a(n) |
|---|---|
| 3 | 0 |
| 4 | 0 |
| 5 | 5 |
| 6 | 5 |
| 7 | 7 |
| 8 | 32 |
| 9 | 67 |
| 10 | 119 |
| 11 | 314 |
| 12 | 783 |
| 13 | 1647 |
| 14 | 3784 |
| 15 | 9819 |
| 16 | 22798 |
| 17 | 53086 |
| 18 | 136574 |
| 19 | 340934 |
| 20 | 838637 |
| 21 | 2163613 |
| 22 | 5611561 |
| 23 | 14448253 |
| 24 | 37842027 |
| 25 | 99967617 |
| 26 | 263651406 |
| 27 | 698535279 |
| 28 | 1859441868 |
| 29 | 4950806428 |
| 30 | 13193880214 |
| 31 | 35230550532 |
[0,0,5,5,7,32,67,119,314,783,1647,3784,9819,22798, 53086,136574,340934,838637,2163613,5611561, 14448253,37842027,99967617,263651406,698535279, 1859441868,4950806428,13193880214,35230550532] |