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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | -1 |
| 4 | -28 |
| 5 | -123 |
| 6 | 182 |
| 7 | 7667 |
| 8 | 54280 |
| 9 | -145239 |
| 10 | -7508758 |
| 11 | -69740537 |
| 12 | 300239084 |
| 13 | 17444352109 |
| 14 | 197525621022 |
| 15 | -1252976775365 |
| 16 | -79313336380656 |
| 17 | -1042490265261103 |
| 18 | 9235164337672658 |
| 19 | 623118827676161167 |
[0,1,2,-1,-28,-123,182,7667,54280,-145239, -7508758,-69740537,300239084,17444352109, 197525621022,-1252976775365,-79313336380656, -1042490265261103,9235164337672658, 623118827676161167] |