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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 13 |
| 4 | 55 |
| 5 | -59 |
| 6 | -8869 |
| 7 | -230019 |
| 8 | -4735569 |
| 9 | -81845819 |
| 10 | -925266221 |
| 11 | 11304277117 |
| 12 | 1342388191079 |
| 13 | 64570153427781 |
| 14 | 2378028350945547 |
| 15 | 68237841920780221 |
| 16 | 1044508709568828511 |
| 17 | -45901762542718407035 |
| 18 | -5887687395597254917885 |
| 19 | -396339747040666473203907 |
[1,1,3,13,55,-59,-8869,-230019,-4735569,-81845819, -925266221,11304277117,1342388191079, 64570153427781,2378028350945547,68237841920780221, 1044508709568828511,-45901762542718407035, -5887687395597254917885,-396339747040666473203907] |