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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 103 |
| 3 | 2027023 |
| 4 | 34459423 |
| 5 | 654729073 |
| 6 | 2980227913743310874726229193921873 |
| 7 | 174865344543353986303948473285124243127671456831640623 |
| 8 | 352999527454840466971061863960307904899505075341088595453568994140623 |
[13,103,2027023,34459423,654729073, 2980227913743310874726229193921873, 17486534454335398630394847328512424312767145683164\ 0623, 35299952745484046697106186396030790489950507534108\ 8595453568994140623] |