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| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 160 |
| 2 | 21504 |
| 3 | 3867840 |
| 4 | 785255680 |
| 5 | 169748686848 |
| 6 | 38094656593920 |
| 7 | 8761529890717696 |
| 8 | 2050020136793604096 |
| 9 | 485760548730263568384 |
| 10 | 116217935644216514314240 |
| 11 | 28016590108689074277580800 |
[3,160,21504,3867840,785255680,169748686848, 38094656593920,8761529890717696, 2050020136793604096,485760548730263568384, 116217935644216514314240, 28016590108689074277580800] |