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| n | a(n) |
|---|---|
| 0 | 315 |
| 1 | 280 |
| 2 | 3675 |
| 3 | 116424 |
| 4 | 5885880 |
| 5 | 399072960 |
| 6 | 33129291195 |
| 7 | 3190228041000 |
| 8 | 344161801063080 |
| 9 | 40616781150254400 |
| 10 | 5155510596280207800 |
| 11 | 695029472211496161600 |
| 12 | 98570579229528369624000 |
| 13 | 14597207555235045670540800 |
| 14 | 2243893009052293495117018875 |
| 15 | 356344642367340570239409729000 |
[315,280,3675,116424,5885880,399072960, 33129291195,3190228041000,344161801063080, 40616781150254400,5155510596280207800, 695029472211496161600,98570579229528369624000, 14597207555235045670540800, 2243893009052293495117018875, 356344642367340570239409729000] |