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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | -1 |
| 3 | 11 |
| 4 | -30 |
| 5 | 463 |
| 6 | -3015 |
| 7 | 57136 |
| 8 | -640500 |
| 9 | 14305285 |
| 10 | -234551205 |
| 11 | 6059972426 |
| 12 | -131755815510 |
| 13 | 3893200782703 |
| 14 | -105378631417059 |
| 15 | 3527510549050216 |
| 16 | -113921716355789160 |
| 17 | 4281885187994847705 |
| 18 | -160171336678757139081 |
[0,2,-1,11,-30,463,-3015,57136,-640500,14305285, -234551205,6059972426,-131755815510,3893200782703, -105378631417059,3527510549050216, -113921716355789160,4281885187994847705, -160171336678757139081] |