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 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 11 |
| 5 | 19 |
| 6 | 37 |
| 7 | 73 |
| 8 | 85 |
| 9 | 155 |
| 10 | 193 |
| 11 | 227 |
| 12 | 233 |
| 13 | 257 |
| 14 | 785 |
| 15 | 797 |
| 16 | 1277 |
| 17 | 2371 |
| 18 | 2771 |
| 19 | 4213 |
| 20 | 9107 |