This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 5 |
| 4 | 17 |
| 5 | 13 |
| 6 | 137 |
| 7 | 8021749 |
| 8 | 1071065111 |
| 9 | 1613902553 |
| 10 | 1797595814863 |
| 11 | 633925574060671 |
| 12 | 22930603692243271 |
| 13 | 5179852391836338871 |
| 14 | 9648166508472058129 |