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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 38 |
| 4 | 3635 |
| 5 | 577003 |
| 6 | 206993155 |
| 7 | 163712015523 |
| 8 | 296587454834249 |
| 9 | 1244478900421397928 |
| 10 | 12226172933184772433991 |
[0,0,38,3635,577003,206993155,163712015523, 296587454834249,1244478900421397928, 12226172933184772433991] |