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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -3 |
| 2 | -7 |
| 3 | 117 |
| 4 | 497 |
| 5 | -15123 |
| 6 | -95767 |
| 7 | 4116837 |
| 8 | 34741217 |
| 9 | -1921996323 |
| 10 | -20273087527 |
| 11 | 1370953667157 |
| 12 | 17352768515537 |
| 13 | -1386843017916723 |
| 14 | -20479521468959287 |
| 15 | 1888542637550347077 |
| 16 | 31872138933891307457 |
| 17 | -3331009898404800736323 |
| 18 | -63243057486503656319047 |
[1,-3,-7,117,497,-15123,-95767,4116837,34741217, -1921996323,-20273087527,1370953667157, 17352768515537,-1386843017916723, -20479521468959287,1888542637550347077, 31872138933891307457,-3331009898404800736323, -63243057486503656319047] |