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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 8256 |
| 3 | 2392578 |
| 4 | 134225920 |
| 5 | 3051796875 |
| 6 | 39182222016 |
| 7 | 339111948196 |
| 8 | 2199024304128 |
| 9 | 11438398618965 |
| 10 | 50000005000000 |
| 11 | 189874926535206 |
| 12 | 641959250190336 |
| 13 | 1968688224223903 |
| 14 | 5556003465485760 |
| 15 | 14596463098125000 |
| 16 | 36028797153181696 |
| 17 | 84188913484869801 |
[0,1,8256,2392578,134225920,3051796875, 39182222016,339111948196,2199024304128, 11438398618965,50000005000000,189874926535206, 641959250190336,1968688224223903,5556003465485760, 14596463098125000,36028797153181696, 84188913484869801] |