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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 2109 |
| 7 | 0 |
| 8 | 86469 |
| 9 | 961704 |
| 10 | 7489059 |
| 11 | 53574224 |
| 12 | 275509215 |
| 13 | 1113906312 |
| 14 | 3626095793 |
| 15 | 9404812736 |
| 16 | 19610283420 |
| 17 | 33067534032 |
| 18 | 45200010670 |
| 19 | 50157375456 |
| 20 | 45200010670 |
| 21 | 33067534032 |
| 22 | 19610283420 |
| 23 | 9404812736 |
[1,0,0,0,0,0,2109,0,86469,961704,7489059,53574224, 275509215,1113906312,3626095793,9404812736, 19610283420,33067534032,45200010670,50157375456, 45200010670,33067534032,19610283420,9404812736] |