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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 324 |
| 3 | 26374 |
| 4 | 2294372 |
| 5 | 197166544 |
| 6 | 16996641648 |
| 7 | 1467880996172 |
| 8 | 126930182790936 |
| 9 | 10983593507924760 |
| 10 | 950783861987061762 |
| 11 | 82317652792534321058 |
| 12 | 7127444249953921537462 |
[0,324,26374,2294372,197166544,16996641648, 1467880996172,126930182790936,10983593507924760, 950783861987061762,82317652792534321058, 7127444249953921537462] |