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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2892 |
| 3 | 124572 |
| 4 | 7577424 |
| 5 | 326005344 |
| 6 | 15231780324 |
| 7 | 655089996204 |
| 8 | 28755516792360 |
| 9 | 1236553617638640 |
| 10 | 53446495303862172 |
| 11 | 2298231625018170492 |
| 12 | 98951519822732397504 |
| 13 | 4254930564828132559104 |
| 14 | 183021121626516730866324 |
[0,2892,124572,7577424,326005344,15231780324, 655089996204,28755516792360,1236553617638640, 53446495303862172,2298231625018170492, 98951519822732397504,4254930564828132559104, 183021121626516730866324] |