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 | 7 |
| 4 | 13 |
| 5 | 17 |
| 6 | 43 |
| 7 | 83 |
| 8 | 167 |
| 9 | 313 |
| 10 | 1667 |
| 11 | 6833 |
| 12 | 8167 |
| 13 | 191833 |
| 14 | 298327 |
| 15 | 3143167 |
| 16 | 197222917 |
| 17 | 994927133 |
| 18 | 3160522105583 |