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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | -17 |
| 3 | 143 |
| 4 | 751 |
| 5 | -20251 |
| 6 | 30871 |
| 7 | 2584847 |
| 8 | -21586193 |
| 9 | -251907751 |
| 10 | 5176221733 |
| 11 | 5498864117 |
| 12 | -913327142441 |
| 13 | 5540080670669 |
| 14 | 120825094592983 |
| 15 | -1860921180719857 |
| 16 | -8346832617144593 |
| 17 | 401702184476719649 |
| 18 | -1403893237226212151 |
| 19 | -64680833271083055607 |
| 20 | 743195619082337134501 |
| 21 | 6754996433001423371159 |
| 22 | -192371016736634220839987 |
| 23 | 139058974519768723621493 |
| 24 | 36163089652079749214625751 |
| 25 | -298797649039016749340832751 |
[1,-1,-17,143,751,-20251,30871,2584847,-21586193, -251907751,5176221733,5498864117,-913327142441, 5540080670669,120825094592983,-1860921180719857, -8346832617144593,401702184476719649, -1403893237226212151,-64680833271083055607, 743195619082337134501,6754996433001423371159, -192371016736634220839987, 139058974519768723621493, 36163089652079749214625751, -298797649039016749340832751] |