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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 1 |
| 7 | -5 |
| 8 | 7 |
| 9 | 6 |
| 10 | 1 |
| 11 | -65 |
| 12 | -15 |
| 13 | 25 |
| 14 | 10 |
| 15 | 1 |
| 16 | -455 |
| 17 | -455 |
| 18 | 0 |
| 19 | 65 |
| 20 | 15 |
| 21 | 1 |
| 22 | -1295 |
| 23 | -4725 |
| 24 | -1715 |
| 25 | 140 |
| 26 | 140 |
| 27 | 21 |
| 28 | 1 |
[1,1,1,1,3,1,-5,7,6,1,-65,-15,25,10,1,-455,-455,0, 65,15,1,-1295,-4725,-1715,140,140,21,1] |