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A337824 as a simple table
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | -15 |
| 4 | 16 |
| 5 | 2505 |
| 6 | -60264 |
| 7 | -606515 |
| 8 | 131316928 |
| 9 | -4813100271 |
| 10 | -339213768200 |
| 11 | 62401665573621 |
| 12 | -2075963863814928 |
| 13 | -745086903175541927 |
| 14 | 140250562903680456332 |
| 15 | 808225064553580739325 |
| 16 | -5491409141464496462591744 |
| 17 | 1013058261721909845376508449 |
| 18 | 127689148764914765889971316600 |
[0,1,2,-15,16,2505,-60264,-606515,131316928, -4813100271,-339213768200,62401665573621, -2075963863814928,-745086903175541927, 140250562903680456332,808225064553580739325, -5491409141464496462591744, 1013058261721909845376508449, 127689148764914765889971316600] |