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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 38 |
| 3 | 2952 |
| 4 | 189762 |
| 5 | 11678172 |
| 6 | 709142453 |
| 7 | 42873095694 |
| 8 | 2588202786224 |
| 9 | 156169886336266 |
| 10 | 9421587226948725 |
| 11 | 568363950894519284 |
[0,38,2952,189762,11678172,709142453,42873095694, 2588202786224,156169886336266,9421587226948725, 568363950894519284] |