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| n | a(n) |
|---|---|
| 1 | 360 |
| 2 | 275040 |
| 3 | 102430080 |
| 4 | 31321626480 |
| 5 | 8516117133360 |
| 6 | 2155827631204800 |
| 7 | 520736224355831520 |
| 8 | 121804259414668451280 |
| 9 | 27852572730572966535120 |
| 10 | 6266130842526092431103520 |
| 11 | 1393142931205269478232279040 |
| 12 | 307064506928289179560841957040 |
| 13 | 67250721492106648169188058371440 |
[360,275040,102430080,31321626480,8516117133360, 2155827631204800,520736224355831520, 121804259414668451280,27852572730572966535120, 6266130842526092431103520, 1393142931205269478232279040, 307064506928289179560841957040, 67250721492106648169188058371440] |