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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 9248 |
| 3 | 0 |
| 4 | 14260416 |
| 5 | 0 |
| 6 | 8807231072 |
| 7 | 0 |
| 8 | 2920221095296 |
| 9 | 0 |
| 10 | 604286975278752 |
| 11 | 0 |
| 12 | 85587416923429440 |
| 13 | 0 |
| 14 | 8833008614958340320 |
| 15 | 0 |
| 16 | 695102146176221154048 |
| 17 | 0 |
| 18 | 43172047917347942629664 |
| 19 | 0 |
| 20 | 2174464783015655477758912 |
| 21 | 0 |
| 22 | 90787245914896872516139872 |
| 23 | 0 |
| 24 | 3199582752316460419118637184 |
| 25 | 0 |
[1,0,9248,0,14260416,0,8807231072,0,2920221095296, 0,604286975278752,0,85587416923429440,0, 8833008614958340320,0,695102146176221154048,0, 43172047917347942629664,0, 2174464783015655477758912,0, 90787245914896872516139872,0, 3199582752316460419118637184,0] |