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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 11552 |
| 3 | 0 |
| 4 | 22249152 |
| 5 | 0 |
| 6 | 17158543712 |
| 7 | 0 |
| 8 | 7101177930112 |
| 9 | 0 |
| 10 | 1833042722372512 |
| 11 | 0 |
| 12 | 323611487252712512 |
| 13 | 0 |
| 14 | 41591858654483462112 |
| 15 | 0 |
| 16 | 4071632614807216677632 |
| 17 | 0 |
| 18 | 314205691310358782784032 |
| 19 | 0 |
| 20 | 19636594989295826962500032 |
| 21 | 0 |
| 22 | 1015769931337011482701057632 |
| 23 | 0 |
| 24 | 44281460900813471312057263232 |
| 25 | 0 |
[1,0,11552,0,22249152,0,17158543712,0, 7101177930112,0,1833042722372512,0, 323611487252712512,0,41591858654483462112,0, 4071632614807216677632,0,314205691310358782784032, 0,19636594989295826962500032,0, 1015769931337011482701057632,0, 44281460900813471312057263232,0] |