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| n | a(n) |
|---|---|
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 7 |
| 8 | 24 |
| 9 | 45 |
| 10 | 70 |
| 11 | 121 |
| 12 | 180 |
| 13 | 273 |
| 14 | 406 |
| 15 | 555 |
| 16 | 784 |
| 17 | 1071 |
[0,0,0,0,7,24,45,70,121,180,273,406,555,784,1071] |