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| n | a(n) |
|---|---|
| 3 | 6 |
| 4 | 7 |
| 5 | 20 |
| 6 | 79 |
| 7 | 90 |
| 8 | 203 |
| 9 | 972 |
| 10 | 3135 |
| 11 | 374 |
| 12 | 283815 |
| 13 | 31824 |
| 14 | 2232 |
| 15 | 10240 |
| 16 | 144584 |
| 17 | 70784 |
[6,7,20,79,90,203,972,3135,374,283815,31824,2232, 10240,144584,70784] |