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| n | a(n) |
|---|---|
| -1 | 1 |
| 0 | -12 |
| 1 | 54 |
| 2 | -76 |
| 3 | -243 |
| 4 | 1188 |
| 5 | -1384 |
| 6 | -2916 |
| 7 | 11934 |
| 8 | -11580 |
| 9 | -21870 |
| 10 | 79704 |
| 11 | -71022 |
| 12 | -123444 |
| 13 | 421308 |
| 14 | -352544 |
| 15 | -581013 |
| 16 | 1885572 |
| 17 | -1510236 |
| 18 | -2388204 |
| 19 | 7469928 |
| 20 | -5777672 |
| 21 | -8852004 |
| 22 | 26869968 |
| 23 | -20218587 |
| 24 | -30177684 |
| 25 | 89408826 |
[1,-12,54,-76,-243,1188,-1384,-2916,11934,-11580, -21870,79704,-71022,-123444,421308,-352544, -581013,1885572,-1510236,-2388204,7469928, -5777672,-8852004,26869968,-20218587,-30177684, 89408826] |