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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 15 |
| 3 | 275 |
| 4 | 382677 |
| 5 | 1046649251798 |
| 6 | 2422932913436254796909358 |
| 7 | 7298956212857760367589586285406004970615840077289 |
| 8 | 146254918268677439622519920044753993861333975570554456887622664610038423045957554361330873143236585 |
[3,15,275,382677,1046649251798, 2422932913436254796909358, 7298956212857760367589586285406004970615840077289, 14625491826867743962251992004475399386133397557055\ 4456887622664610038423045957554361330873143236585] |