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| n | a(n) |
|---|---|
| 7 | 7752 |
| 8 | 942172 |
| 9 | 69858360 |
| 10 | 4110110550 |
| 11 | 211675627240 |
| 12 | 10018481786544 |
| 13 | 448004505210535 |
| 14 | 19256258184412314 |
| 15 | 804574034878107648 |
| 16 | 32931600573236529164 |
| 17 | 1327621591399983233480 |
| 18 | 52924527085674622431690 |
| 19 | 2092267882428782767625532 |
| 20 | 82204203906811813227807616 |
[7752,942172,69858360,4110110550,211675627240, 10018481786544,448004505210535,19256258184412314, 804574034878107648,32931600573236529164, 1327621591399983233480,52924527085674622431690, 2092267882428782767625532, 82204203906811813227807616] |