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| n | a(n) |
|---|---|
| 0 | 720 |
| 1 | 95760 |
| 2 | 323885520 |
| 3 | 520091041680 |
| 4 | 646101191031120 |
| 5 | 1426723480107570960 |
| 6 | 1908953197598354801040 |
| 7 | 3574028285578402656777360 |
| 8 | 5645446200753726958758372240 |
| 9 | 9359837643523957747903959388560 |
[720,95760,323885520,520091041680,646101191031120, 1426723480107570960,1908953197598354801040, 3574028285578402656777360, 5645446200753726958758372240, 9359837643523957747903959388560] |