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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 924 |
| 2 | 226512 |
| 3 | 24293412 |
| 4 | 1447482465 |
| 5 | 55197331332 |
| 6 | 1478619421136 |
| 7 | 29706808370096 |
| 8 | 469699956117392 |
| 9 | 6062460972064640 |
| 10 | 65728947490132992 |
| 11 | 612416828057104512 |
| 12 | 4995284546047230864 |
| 13 | 36217696550300209296 |
| 14 | 236405501218419838800 |
| 15 | 1404221840699607829900 |
[1,924,226512,24293412,1447482465,55197331332, 1478619421136,29706808370096,469699956117392, 6062460972064640,65728947490132992, 612416828057104512,4995284546047230864, 36217696550300209296,236405501218419838800, 1404221840699607829900] |