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| n | a(n) |
|---|---|
| 1 | 336 |
| 2 | 6432 |
| 3 | 149120 |
| 4 | 3364544 |
| 5 | 78731136 |
| 6 | 1806815040 |
| 7 | 42196917280 |
| 8 | 972415126144 |
| 9 | 22683600827456 |
| 10 | 523428338294528 |
| 11 | 12204309920521600 |
| 12 | 281744591491984896 |
| 13 | 6568032234638862080 |
| 14 | 151651626145836973056 |
| 15 | 3535077529243329150464 |
[336,6432,149120,3364544,78731136,1806815040, 42196917280,972415126144,22683600827456, 523428338294528,12204309920521600, 281744591491984896,6568032234638862080, 151651626145836973056,3535077529243329150464] |