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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | 119 |
| 4 | -671 |
| 5 | -118801 |
| 6 | 1578721 |
| 7 | 472546983 |
| 8 | -11434861759 |
| 9 | -5281001286433 |
| 10 | 202651641610561 |
| 11 | 134214161576815319 |
| 12 | -7489030360212947039 |
| 13 | -6743315366908570697521 |
| 14 | 515685193530081985152289 |
| 15 | 606502419281376583942534919 |
| 16 | -60891202949811176406832459647 |
| 17 | -90683512562992732210541162641985 |
| 18 | 11568533431831545319762169579235457 |
| 19 | 21284623320002783970199662076124812599 |
[1,-1,1,119,-671,-118801,1578721,472546983, -11434861759,-5281001286433,202651641610561, 134214161576815319,-7489030360212947039, -6743315366908570697521,515685193530081985152289, 606502419281376583942534919, -60891202949811176406832459647, -90683512562992732210541162641985, 11568533431831545319762169579235457, 21284623320002783970199662076124812599] |