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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 3 |
| 4 | -2 |
| 5 | 0 |
| 6 | 9 |
| 7 | -12 |
| 8 | 4 |
| 9 | 27 |
| 10 | -54 |
| 11 | 36 |
| 12 | 73 |
| 13 | -216 |
| 14 | 216 |
| 15 | 147 |
| 16 | -794 |
| 17 | 1080 |
| 18 | 9 |
| 19 | -2676 |
| 20 | 4828 |
| 21 | -2133 |
| 22 | -8046 |
| 23 | 19836 |
| 24 | -16055 |
| 25 | -19872 |
| 26 | 75600 |
| 27 | -87837 |
| 28 | -27506 |
| 29 | 266544 |
| 30 | -414711 |
| 31 | 93156 |
| 32 | 854644 |
| 33 | -1777221 |
| 34 | 1108890 |
| 35 | 2377620 |
| 36 | -7040951 |
| 37 | 6881112 |
| 38 | 4915080 |
| 39 | -25878093 |
| 40 | 34725238 |
| 41 | 983016 |
| 42 | -87464439 |
[1,0,0,3,-2,0,9,-12,4,27,-54,36,73,-216,216,147, -794,1080,9,-2676,4828,-2133,-8046,19836,-16055, -19872,75600,-87837,-27506,266544,-414711,93156, 854644,-1777221,1108890,2377620,-7040951,6881112, 4915080,-25878093,34725238,983016,-87464439] |