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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | -8 |
| 5 | -95 |
| 6 | -144 |
| 7 | 5299 |
| 8 | 51584 |
| 9 | -263007 |
| 10 | -11283200 |
| 11 | -61279229 |
| 12 | 2321353728 |
| 13 | 49471727617 |
| 14 | -217783810048 |
| 15 | -25824369466125 |
| 16 | -298783278792704 |
| 17 | 10591512134358721 |
| 18 | 400315590893961216 |
| 19 | -536860171776183677 |
| 20 | -362306852971970560000 |
| 21 | -7292410691309793586719 |
| 22 | 227379942363338919903232 |
[1,1,2,3,-8,-95,-144,5299,51584,-263007,-11283200, -61279229,2321353728,49471727617,-217783810048, -25824369466125,-298783278792704, 10591512134358721,400315590893961216, -536860171776183677,-362306852971970560000, -7292410691309793586719,227379942363338919903232] |