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| n | a(n) |
|---|---|
| 3 | 32 |
| 4 | 2060 |
| 5 | 141880 |
| 6 | 4854272 |
| 7 | 73856992 |
| 8 | 668598540 |
| 9 | 4259570196 |
| 10 | 21065037760 |
| 11 | 86017825224 |
| 12 | 302312608028 |
| 13 | 941578159280 |
| 14 | 2655072415456 |
| 15 | 6888478511720 |
| 16 | 16650113930716 |
| 17 | 37865062169148 |
| 18 | 81663610397952 |
| 19 | 168110566286800 |
[32,2060,141880,4854272,73856992,668598540, 4259570196,21065037760,86017825224,302312608028, 941578159280,2655072415456,6888478511720, 16650113930716,37865062169148,81663610397952, 168110566286800] |