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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 9 |
| 4 | 187 |
| 5 | 9075 |
| 6 | 1034073 |
| 7 | 277458045 |
| 8 | 175605187731 |
| 9 | 262459366542859 |
| 10 | 927063711694234937 |
| 11 | 7743238400519517700687 |
| 12 | 152996488947929392223648350 |
| 13 | 7153582340115101979222478030231 |
| 14 | 791692010951982239786844983500390201 |
| 15 | 207426783553049237691620430245372971070275 |
[1,9,187,9075,1034073,277458045,175605187731, 262459366542859,927063711694234937, 7743238400519517700687, 152996488947929392223648350, 7153582340115101979222478030231, 791692010951982239786844983500390201, 207426783553049237691620430245372971070275] |