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| n | a(n) |
|---|---|
| 6 | 0 |
| 7 | 1 |
| 8 | 35 |
| 9 | 413 |
| 10 | 3709 |
| 11 | 30396 |
| 12 | 242366 |
| 13 | 1934021 |
| 14 | 15653524 |
| 15 | 129267234 |
| 16 | 1091892025 |
| 17 | 9444993005 |
| 18 | 83722879838 |
| 19 | 760771479660 |
| 20 | 7087056828919 |
| 21 | 67674638461955 |
| 22 | 662248199987728 |
| 23 | 6638947646238102 |
| 24 | 68153572265860585 |
| 25 | 716151632403862252 |
| 26 | 7699437833837232406 |
[0,1,35,413,3709,30396,242366,1934021,15653524, 129267234,1091892025,9444993005,83722879838, 760771479660,7087056828919,67674638461955, 662248199987728,6638947646238102, 68153572265860585,716151632403862252, 7699437833837232406] |