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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | -3 |
| 4 | -6 |
| 5 | 45 |
| 6 | 11 |
| 7 | -1372 |
| 8 | 4298 |
| 9 | 59244 |
| 10 | -573463 |
| 11 | -2432023 |
| 12 | 75984243 |
| 13 | -136498141 |
| 14 | -10881169822 |
| 15 | 100704750342 |
| 16 | 1514280063802 |
| 17 | -36086469752977 |
| 18 | -102642110690866 |
| 19 | 11883894518252419 |
| 20 | -77863424962770751 |
| 21 | -3705485804176583500 |
| 22 | 71306510264347489177 |
[1,2,-3,-6,45,11,-1372,4298,59244,-573463, -2432023,75984243,-136498141,-10881169822, 100704750342,1514280063802,-36086469752977, -102642110690866,11883894518252419, -77863424962770751,-3705485804176583500, 71306510264347489177] |