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 | 3 |
| 3 | 17 |
| 4 | 5 |
| 5 | 57 |
| 6 | 7 |
| 7 | 18785 |
| 8 | 7073 |
| 9 | 593 |
| 10 | 11 |
| 11 | 2169 |
| 12 | 13 |
| 13 | 67137425 |
| 14 | 4785713 |
| 15 | 32993 |
| 16 | 17 |
| 17 | 131361 |
| 18 | 19 |
| 19 | 274878037265 |
| 20 | 3486792401 |
| 21 | 2097593 |
| 22 | 23 |
| 23 | 789730223201638705 |
| 24 | 59604644783353249 |
| 25 | 1125899907233249 |
| 26 | 2541865845905 |
| 27 | 134218457 |
| 28 | 29 |
| 29 | 536871753 |
| 30 | 31 |