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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 12 |
| 3 | -98 |
| 4 | -16968 |
| 5 | -780838 |
| 6 | 93371652 |
| 7 | 31402903222 |
| 8 | 2306688997872 |
| 9 | -1741952370835918 |
| 10 | -849143623135762308 |
| 11 | -14075683397521166258 |
| 12 | 228742196475611564627112 |
| 13 | 136676421833398225367464202 |
| 14 | -34106209758743782233592937868 |
| 15 | -128144470665734286260829913072538 |
[0,2,12,-98,-16968,-780838,93371652,31402903222, 2306688997872,-1741952370835918, -849143623135762308,-14075683397521166258, 228742196475611564627112, 136676421833398225367464202, -34106209758743782233592937868, -128144470665734286260829913072538] |