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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 12 |
| 2 | 960 |
| 3 | 48384 |
| 4 | 2027520 |
| 5 | 76876800 |
| 6 | 2737373184 |
| 7 | 93351444480 |
| 8 | 3084788957184 |
| 9 | 99518467276800 |
| 10 | 3150448164864000 |
| 11 | 98221972499988480 |
| 12 | 3023952067480780800 |
| 13 | 92119659815689519104 |
| 14 | 2781153700681435054080 |
| 15 | 83317180181568395673600 |
| 16 | 2479232599432958230659072 |
| 17 | 73338095004533174933913600 |
[0,12,960,48384,2027520,76876800,2737373184, 93351444480,3084788957184,99518467276800, 3150448164864000,98221972499988480, 3023952067480780800,92119659815689519104, 2781153700681435054080,83317180181568395673600, 2479232599432958230659072, 73338095004533174933913600] |