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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 4837644 |
| 6 | 545544720 |
| 7 | 29957919660 |
| 8 | 964803491820 |
| 9 | 20625869973240 |
| 10 | 319226366296656 |
| 11 | 3804612154272720 |
| 12 | 36543747821394240 |
| 13 | 292837918464839160 |
| 14 | 2011081568586197040 |
| 15 | 12091306043532050748 |
| 16 | 64747015918593235290 |
[1,0,0,0,0,4837644,545544720,29957919660, 964803491820,20625869973240,319226366296656, 3804612154272720,36543747821394240, 292837918464839160,2011081568586197040, 12091306043532050748,64747015918593235290] |