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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 8 |
| 4 | 270 |
| 5 | 35472 |
| 6 | 18318288 |
| 7 | 37611139104 |
| 8 | 308338698386160 |
| 9 | 10105807430398162176 |
| 10 | 1324669305373789482964224 |
| 11 | 694520145536868530329362481152 |
| 12 | 1456521257891915020152240334073326080 |
| 13 | 12218201898131114878545053215635303915614208 |
| 14 | 409974971372215896118360380056730403849666983370752 |
[1,1,8,270,35472,18318288,37611139104, 308338698386160,10105807430398162176, 1324669305373789482964224, 694520145536868530329362481152, 1456521257891915020152240334073326080, 12218201898131114878545053215635303915614208, 40997497137221589611836038005673040384966698337075\ 2] |