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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 50 |
| 5 | 6027 |
| 6 | 1350948 |
| 7 | 486396405 |
| 8 | 256822659990 |
| 9 | 186967652864895 |
| 10 | 179489092842045000 |
| 11 | 219694686618136235625 |
| 12 | 333935935534086791456250 |
| 13 | 617113613582364168765061875 |
| 14 | 1362586861058382580086938587500 |
| 15 | 3542725840051847141662287901708125 |
[0,0,1,50,6027,1350948,486396405,256822659990, 186967652864895,179489092842045000, 219694686618136235625,333935935534086791456250, 617113613582364168765061875, 1362586861058382580086938587500, 3542725840051847141662287901708125] |