The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 12 |
| 2 | 864 |
| 3 | 100800 |
| 4 | 14112000 |
| 5 | 2139830784 |
| 6 | 338341183488 |
| 7 | 54913641209856 |
| 8 | 9080061146956800 |
| 9 | 1523231914913280000 |
| 10 | 258557709598427086848 |
| 11 | 44324863067728222027776 |
| 12 | 7663322563977594870300672 |
| 13 | 1334677098876385703362560000 |
| 14 | 233951210561895726160281600000 |
[1,12,864,100800,14112000,2139830784,338341183488, 54913641209856,9080061146956800, 1523231914913280000,258557709598427086848, 44324863067728222027776,7663322563977594870300672, 1334677098876385703362560000, 233951210561895726160281600000] |