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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | -9 |
| 4 | -428 |
| 5 | -5475 |
| 6 | 251382 |
| 7 | 21193459 |
| 8 | 276227560 |
| 9 | -106494482439 |
| 10 | -11901572968150 |
| 11 | 248514536608943 |
| 12 | 277290379883298492 |
| 13 | 34240556133396062229 |
| 14 | -5078626013008010061410 |
[0,1,2,-9,-428,-5475,251382,21193459,276227560, -106494482439,-11901572968150,248514536608943, 277290379883298492,34240556133396062229, -5078626013008010061410] |