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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 | 1 |
| 2 | -3 |
| 3 | 3 |
| 4 | 9 |
| 5 | -25 |
| 6 | -99 |
| 7 | 427 |
| 8 | 2193 |
| 9 | -12465 |
| 10 | -79515 |
| 11 | 555731 |
| 12 | 4247577 |
| 13 | -35135945 |
| 14 | -313193811 |
| 15 | 2990414715 |
| 16 | 30461046561 |
| 17 | -329655706465 |
| 18 | -3777604994187 |
| 19 | 45692713833379 |
| 20 | 581778811909545 |
| 21 | -7777794952988025 |
| 22 | -108933009112011843 |
| 23 | 1595024111042171723 |
| 24 | 24370176181315498929 |
[0,1,-3,3,9,-25,-99,427,2193,-12465,-79515,555731, 4247577,-35135945,-313193811,2990414715, 30461046561,-329655706465,-3777604994187, 45692713833379,581778811909545,-7777794952988025, -108933009112011843,1595024111042171723, 24370176181315498929] |