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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3080 |
| 3 | 350350 |
| 4 | 61850250 |
| 5 | 17823180375 |
| 6 | 6871260396000 |
| 7 | 88909822914869880000 |
| 8 | 2746644314348614680000 |
| 9 | 2980109081068246927800000 |
| 10 | 9638057975990853416623724908800000 |
| 11 | 424217819372970387341691005411520000 |
| 12 | 51912228216508515627667235880347808000000 |
| 13 | 152157812632066726080765311397008321568000000 |
[1,3080,350350,61850250,17823180375,6871260396000, 88909822914869880000,2746644314348614680000, 2980109081068246927800000, 9638057975990853416623724908800000, 424217819372970387341691005411520000, 51912228216508515627667235880347808000000, 152157812632066726080765311397008321568000000] |