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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 4 |
| 2 | -10 |
| 3 | 1160 |
| 4 | 267178 |
| 5 | 25749260 |
| 6 | 1675836318 |
| 7 | 292637394192 |
| 8 | 163260945099858 |
| 9 | 64904840292491284 |
| 10 | 19017877552509443654 |
| 11 | 7018293499345186438552 |
| 12 | 5539610614858975449636346 |
[2,4,-10,1160,267178,25749260,1675836318, 292637394192,163260945099858,64904840292491284, 19017877552509443654,7018293499345186438552, 5539610614858975449636346] |