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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 13 |
| 3 | 3133 |
| 4 | 204525373 |
| 5 | 878416384666881853 |
| 6 | 16203922234330403022943873881213226813 |
| 7 | 5513909011300771210646237381366090850171917477741023928710521838825947516733 |
[1,13,3133,204525373,878416384666881853, 16203922234330403022943873881213226813, 55139090113007712106462373813660908501719174777410\ 23928710521838825947516733] |