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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | 10 |
| 3 | -62 |
| 4 | 250 |
| 5 | 3538 |
| 6 | -109430 |
| 7 | 376738 |
| 8 | 64406170 |
| 9 | -1496149262 |
| 10 | -66387156950 |
| 11 | 4120939699138 |
| 12 | 114360544465210 |
| 13 | -16447057086702062 |
| 14 | -315993884108535350 |
| 15 | 99921676927889325538 |
| 16 | 1478937314465295441370 |
| 17 | -907773678752741550637262 |
| 18 | -14225447208333541085396630 |
[1,-2,10,-62,250,3538,-109430,376738,64406170, -1496149262,-66387156950,4120939699138, 114360544465210,-16447057086702062, -315993884108535350,99921676927889325538, 1478937314465295441370,-907773678752741550637262, -14225447208333541085396630] |