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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 31775 |
| 3 | 0 |
| 4 | 1016800 |
| 5 | 1301504 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 0 |
| 25 | 6507520 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | 0 |
| 30 | 0 |
| 31 | 15744000 |
| 32 | 0 |
| 33 | 0 |
| 34 | 0 |
| 35 | 0 |
| 36 | 0 |
| 37 | 0 |
| 38 | 0 |
| 39 | 0 |
| 40 | 0 |
| 41 | 7936000 |
[1,31775,0,1016800,1301504,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,6507520,0,0,0,0,0,15744000,0,0,0, 0,0,0,0,0,0,7936000] |