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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | -1 |
| 5 | 0 |
| 6 | -4 |
| 7 | -8 |
| 8 | -23 |
| 9 | -28 |
| 10 | -186 |
| 11 | 48 |
| 12 | -1301 |
| 13 | 1412 |
| 14 | -12292 |
| 15 | 30384 |
| 16 | -142441 |
| 17 | 416612 |
| 18 | -1613164 |
| 19 | 5161772 |
| 20 | -18738614 |
| 21 | 62391348 |
| 22 | -219708272 |
| 23 | 744185860 |
| 24 | -2587326809 |
| 25 | 8835253824 |
| 26 | -30515082648 |
| 27 | 104424738432 |
| 28 | -358958816131 |
| 29 | 1227808860812 |
| 30 | -4206527025296 |
[1,0,0,0,-1,0,-4,-8,-23,-28,-186,48,-1301,1412, -12292,30384,-142441,416612,-1613164,5161772, -18738614,62391348,-219708272,744185860, -2587326809,8835253824,-30515082648,104424738432, -358958816131,1227808860812,-4206527025296] |