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| n | a(n) |
|---|---|
| 1 | 52 |
| 2 | 324 |
| 3 | 9714 |
| 4 | 142352 |
| 5 | 2517024 |
| 6 | 42169152 |
| 7 | 714303376 |
| 8 | 12077450784 |
| 9 | 204161943712 |
| 10 | 3452345816640 |
| 11 | 58366975597504 |
| 12 | 986868844185984 |
| 13 | 16685367542010496 |
| 14 | 282109578735300864 |
| 15 | 4769776075129487104 |
| 16 | 80645235669257971200 |
[52,324,9714,142352,2517024,42169152,714303376, 12077450784,204161943712,3452345816640, 58366975597504,986868844185984,16685367542010496, 282109578735300864,4769776075129487104, 80645235669257971200] |