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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | -626 |
| 3 | -38240 |
| 4 | 1044556 |
| 5 | 151623616 |
| 6 | -2180514104 |
| 7 | -837280401536 |
| 8 | 66007653520 |
| 9 | 5908906635694336 |
| 10 | 94018537417467616 |
| 11 | -50612259928144561664 |
| 12 | -1721964008874583797056 |
| 13 | 508128734937488699898880 |
| 14 | 27874099084755797015426176 |
| 15 | -5828388033652017714104551424 |
[1,16,-626,-38240,1044556,151623616,-2180514104, -837280401536,66007653520,5908906635694336, 94018537417467616,-50612259928144561664, -1721964008874583797056,508128734937488699898880, 27874099084755797015426176, -5828388033652017714104551424] |