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 | 3 |
| 2 | 7 |
| 3 | 11 |
| 4 | 47 |
| 5 | 81 |
| 6 | 95 |
| 7 | 107 |
| 8 | 179 |
| 9 | 233 |
| 10 | 243 |
| 11 | 947 |
| 12 | 2817 |
| 13 | 2859 |
| 14 | 3233 |
| 15 | 7563 |
| 16 | 11307 |
| 17 | 218615 |
| 18 | 225587 |
| 19 | 1160027 |