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 | 4 |
| 2 | 8 |
| 3 | 25 |
| 4 | 91 |
| 5 | 115 |
| 6 | 527 |
| 7 | 527 |
| 8 | 1331 |
| 9 | 1331 |
| 10 | 4301 |
| 11 | 15689 |
| 12 | 14111 |
| 13 | 19337 |
| 14 | 31427 |
| 15 | 175151 |
| 16 | 175151 |
| 17 | 175151 |
| 18 | 175151 |
| 19 | 175151 |