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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 22 |
| 2 | -766 |
| 3 | -71852 |
| 4 | 1291756 |
| 5 | 387678632 |
| 6 | 455454904 |
| 7 | -2897569732112 |
| 8 | -67731764516464 |
| 9 | 27485598501757792 |
| 10 | 1366665517848891424 |
| 11 | -313503339879296788672 |
| 12 | -25688724347766786430784 |
| 13 | 4137398162538582528602752 |
| 14 | 508464530227059095129500544 |
| 15 | -61218248179429894157699148032 |
[1,22,-766,-71852,1291756,387678632,455454904, -2897569732112,-67731764516464,27485598501757792, 1366665517848891424,-313503339879296788672, -25688724347766786430784, 4137398162538582528602752, 508464530227059095129500544, -61218248179429894157699148032] |