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| n | a(n) |
|---|---|
| -1 | 1 |
| 0 | -240 |
| 1 | -141444 |
| 2 | -8529280 |
| 3 | -238758390 |
| 4 | -4303488384 |
| 5 | -57655810840 |
| 6 | -621029223936 |
| 7 | -5646404776905 |
| 8 | -44775042057600 |
| 9 | -316969789769460 |
| 10 | -2038098739288320 |
| 11 | -12061935823445274 |
| 12 | -66393891923258880 |
| 13 | -342773252668461240 |
| 14 | -1671250213190122496 |
[1,-240,-141444,-8529280,-238758390,-4303488384, -57655810840,-621029223936,-5646404776905, -44775042057600,-316969789769460, -2038098739288320,-12061935823445274, -66393891923258880,-342773252668461240, -1671250213190122496] |