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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 1 |
| 8 | -6 |
| 9 | 45 |
| 10 | -86 |
| 11 | 173 |
| 12 | -100 |
| 13 | 2641 |
| 14 | -48311 |
| 15 | 717766 |
| 16 | -15527527 |
| 17 | 395694683 |
| 18 | -11210796201 |
| 19 | 356923346235 |
| 20 | -12694851400717 |
| 21 | 501010779605741 |
| 22 | -21827969798073020 |
| 23 | 1044997258445975691 |
| 24 | -54740156237911040100 |
[1,1,3,2,3,4,1,-6,45,-86,173,-100,2641,-48311, 717766,-15527527,395694683,-11210796201, 356923346235,-12694851400717,501010779605741, -21827969798073020,1044997258445975691, -54740156237911040100] |