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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 6912 |
| 3 | 98496 |
| 4 | 1347192 |
| 5 | 17194680 |
| 6 | 214142760 |
| 7 | 2611960344 |
| 8 | 31382176824 |
| 9 | 372469407912 |
| 10 | 4376985056856 |
| 11 | 51011490408120 |
| 12 | 590386685589432 |
| 13 | 6792451934064264 |
| 14 | 77748739088317848 |
| 15 | 885979967930009496 |
[0,6912,98496,1347192,17194680,214142760, 2611960344,31382176824,372469407912,4376985056856, 51011490408120,590386685589432,6792451934064264, 77748739088317848,885979967930009496] |