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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 13002 |
| 7 | 11471355944 |
| 8 | 101716608710405424 |
| 9 | 18726065054096898027414348 |
| 10 | 96678228204760902484487394741989088 |
[1,0,0,0,0,13002,11471355944,101716608710405424, 18726065054096898027414348, 96678228204760902484487394741989088] |