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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 2 |
| 3 | 17 |
| 4 | 347 |
| 5 | 2903 |
| 6 | 15373 |
| 7 | 128981 |
| 8 | 1319407 |
| 9 | 17797517 |
| 10 | 94097537 |
| 11 | 6927837557 |
| 12 | 48486712783 |
| 13 | 968068681511 |
| 14 | 1472840004017 |
| 15 | 129001208165717 |
[3,2,17,347,2903,15373,128981,1319407,17797517, 94097537,6927837557,48486712783,968068681511, 1472840004017,129001208165717] |