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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 21 |
| 3 | 34 |
| 4 | 1597 |
| 5 | 2584 |
| 6 | 6765 |
| 7 | 121393 |
| 8 | 514229 |
| 9 | 14930352 |
| 10 | 24157817 |
| 11 | 7778742049 |
| 12 | 365435296162 |
| 13 | 44945570212853 |
| 14 | 184551825793033096366333 |
| 15 | 781774079430987230203437 |
| 16 | 7896325826131730509282738943634332893686268675876375 |
[13,21,34,1597,2584,6765,121393,514229,14930352, 24157817,7778742049,365435296162,44945570212853, 184551825793033096366333,781774079430987230203437, 78963258261317305092827389436343328936862686758763\ 75] |