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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | -5 |
| 4 | 0 |
| 5 | 183 |
| 6 | 0 |
| 7 | -14352 |
| 8 | 0 |
| 9 | 1857199 |
| 10 | 0 |
| 11 | -355082433 |
| 12 | 0 |
| 13 | 94134281460 |
| 14 | 0 |
| 15 | -33120720127500 |
| 16 | 0 |
| 17 | 14959943533260783 |
| 18 | 0 |
| 19 | -8447188671812872887 |
| 20 | 0 |
| 21 | 5834800994047642310223 |
| 22 | 0 |
| 23 | -4842259038722174600622240 |
| 24 | 0 |
[1,1,0,-5,0,183,0,-14352,0,1857199,0,-355082433,0, 94134281460,0,-33120720127500,0,14959943533260783, 0,-8447188671812872887,0,5834800994047642310223,0, -4842259038722174600622240,0] |