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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 200 |
| 4 | 22008 |
| 5 | 8968614 |
| 6 | 13103201154 |
| 7 | 66911528280456 |
| 8 | 1170951806182816008 |
| 9 | 69148802888161984160496 |
| 10 | 13610904625275511792310726256 |
| 11 | 8840888240006182011615570947541552 |
| 12 | 18793694994107665289261434484161549856688 |
[1,1,7,200,22008,8968614,13103201154, 66911528280456,1170951806182816008, 69148802888161984160496, 13610904625275511792310726256, 8840888240006182011615570947541552, 18793694994107665289261434484161549856688] |