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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 64 |
| 3 | 1236 |
| 4 | 4096 |
| 5 | -57450 |
| 6 | 79104 |
| 7 | 64232 |
| 8 | 262144 |
| 9 | -66627 |
| 10 | -3676800 |
| 11 | 2464572 |
| 12 | 5062656 |
| 13 | 8032766 |
| 14 | 4110848 |
| 15 | -71008200 |
| 16 | 16777216 |
| 17 | 71112402 |
| 18 | -4264128 |
| 19 | 136337060 |
| 20 | -235315200 |
| 21 | 79390752 |
| 22 | 157732608 |
| 23 | -1186563144 |
| 24 | 324009984 |
| 25 | 2079799375 |
| 26 | 514097024 |
| 27 | -2052934200 |
| 28 | 263094272 |
[1,64,1236,4096,-57450,79104,64232,262144,-66627, -3676800,2464572,5062656,8032766,4110848, -71008200,16777216,71112402,-4264128,136337060, -235315200,79390752,157732608,-1186563144, 324009984,2079799375,514097024,-2052934200, 263094272] |