| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 3125 |
| 7 | -62500 |
| 8 | 781250 |
| 9 | -7812500 |
| 10 | 68359375 |
| 11 | -546875000 |
| 12 | 4082031250 |
| 13 | -28417968750 |
| 14 | 179443359375 |
| 15 | -939941406250 |
| 16 | 2685546875000 |
| 17 | 23010253906250 |
| 18 | -569122314453125 |
| 19 | 7669982910156250 |
| 20 | -84739685058593750 |
| 21 | 836715698242187500 |
| 22 | -7611751556396484375 |
[1,5,0,0,0,0,3125,-62500,781250,-7812500,68359375, -546875000,4082031250,-28417968750,179443359375, -939941406250,2685546875000,23010253906250, -569122314453125,7669982910156250, -84739685058593750,836715698242187500, -7611751556396484375] |