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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 5 |
| 2 | 25 |
| 3 | 539 |
| 4 | 65617 |
| 5 | 33554675 |
| 6 | 68719477465 |
| 7 | 562949953423499 |
| 8 | 18446744073709558177 |
| 9 | 2417851639229258349432035 |
| 10 | 1267650600228229401496703264425 |
| 11 | 2658455991569831745807614120560866299 |
| 12 | 22300745198530623141535718272648361506511857 |
| 13 | 748288838313422294120286634350736906063837463598035 |
[2,5,25,539,65617,33554675,68719477465, 562949953423499,18446744073709558177, 2417851639229258349432035, 1267650600228229401496703264425, 2658455991569831745807614120560866299, 22300745198530623141535718272648361506511857, 74828883831342229412028663435073690606383746359803\ 5] |