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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 45 |
| 3 | 1512 |
| 4 | 51408 |
| 5 | 66528 |
| 6 | 85500 |
| 7 | 185976 |
| 8 | 6323184 |
| 9 | 8182944 |
| 10 | 11442816 |
| 11 | 43023600 |
| 12 | 368852400 |
| 13 | 1407466368 |
| 14 | 5881607424 |
| 15 | 22350712320 |
| 16 | 723437713152 |
| 17 | 183348802920960 |
[3,45,1512,51408,66528,85500,185976,6323184, 8182944,11442816,43023600,368852400,1407466368, 5881607424,22350712320,723437713152, 183348802920960] |