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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1260230400 |
| 5 | 0 |
| 6 | 211691822284800 |
| 7 | 167823813692620800 |
| 8 | 478913396715566841600 |
| 9 | 800774658647826785894400 |
| 10 | 611331534352048834410577920 |
| 11 | 247750040775246869910100377600 |
| 12 | 59524143410351572596837132825600 |
| 13 | 9219467698757233237143045380505600 |
| 14 | 982518868151763901368740969501491200 |
[1,0,0,0,1260230400,0,211691822284800, 167823813692620800,478913396715566841600, 800774658647826785894400, 611331534352048834410577920, 247750040775246869910100377600, 59524143410351572596837132825600, 9219467698757233237143045380505600, 982518868151763901368740969501491200] |