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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 169112 |
| 6 | 10666911842 |
| 7 | 144992583036707 |
| 8 | 977872935273906860 |
| 9 | 4533679418476771721737 |
| 10 | 16735474987695189115200083 |
| 11 | 52897669638612326017382683223 |
| 12 | 148800412069938493243660027000241 |
[0,0,0,1,169112,10666911842,144992583036707, 977872935273906860,4533679418476771721737, 16735474987695189115200083, 52897669638612326017382683223, 148800412069938493243660027000241] |