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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 6 |
| 4 | 118 |
| 5 | 7000 |
| 6 | 1329496 |
| 7 | 868255024 |
| 8 | 2039295163312 |
| 9 | 17639804273910144 |
| 10 | 569596637165777524096 |
| 11 | 69273803156588266525129984 |
| 12 | 31940576331984155835757999795456 |
| 13 | 56121305700570450429977355284230355968 |
| 14 | 377361653292638108206937443603065676106341376 |
[1,1,6,118,7000,1329496,868255024,2039295163312, 17639804273910144,569596637165777524096, 69273803156588266525129984, 31940576331984155835757999795456, 56121305700570450429977355284230355968, 377361653292638108206937443603065676106341376] |