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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 609 |
| 4 | 70127 |
| 5 | 1071459023 |
| 6 | 41103397063050887 |
| 7 | 12074653564708687350501143 |
| 8 | 164709020707884260873759905895255 |
| 9 | 721042306123480954499228319292055451215689 |
[1,609,70127,1071459023,41103397063050887, 12074653564708687350501143, 164709020707884260873759905895255, 721042306123480954499228319292055451215689] |