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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | -2 |
| 4 | 1 |
| 5 | 0 |
| 6 | 4 |
| 7 | 16 |
| 8 | 16 |
| 9 | -64 |
| 10 | 1184 |
| 11 | -4176 |
| 12 | 11588 |
| 13 | -45320 |
| 14 | 60177 |
| 15 | -107154 |
| 16 | 596001 |
| 17 | -2059576 |
| 18 | 9159736 |
| 19 | 8005616 |
| 20 | 313722880 |
| 21 | 1052525600 |
| 22 | 9682854977 |
| 23 | 55241475020 |
| 24 | 489566327904 |
| 25 | 4159594989264 |
| 26 | 34384770630704 |
| 27 | 347985635900764 |
| 28 | 3590752406671641 |
| 29 | 36608921259384368 |
[1,0,1,-2,1,0,4,16,16,-64,1184,-4176,11588,-45320, 60177,-107154,596001,-2059576,9159736,8005616, 313722880,1052525600,9682854977,55241475020, 489566327904,4159594989264,34384770630704, 347985635900764,3590752406671641, 36608921259384368] |