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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 362880 |
| 3 | 4737782756017 |
| 4 | 146830181787844853760 |
| 5 | 6753239838803803486306487761 |
| 6 | 389685915793550955923351453734807680 |
| 7 | 26057203877175385471624399463506301352492241 |
| 8 | 1932393393532020981741986795273501624377597577134080 |
[1,362880,4737782756017,146830181787844853760, 6753239838803803486306487761, 389685915793550955923351453734807680, 26057203877175385471624399463506301352492241, 19323933935320209817419867952735016243775975771340\ 80] |