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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 11 |
| 4 | 361 |
| 5 | 18479 |
| 6 | 1814401 |
| 7 | 220207679 |
| 8 | 43589145601 |
| 9 | 9589093113599 |
| 10 | 3210079038566401 |
| 11 | 1115080757523532799 |
| 12 | 562000363888803840001 |
| 13 | 285218528618534141030399 |
| 14 | 201645730563302817792000001 |
[0,1,11,361,18479,1814401,220207679,43589145601, 9589093113599,3210079038566401, 1115080757523532799,562000363888803840001, 285218528618534141030399, 201645730563302817792000001] |