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 | 5 |
| 2 | 25 |
| 3 | 62 |
| 4 | 151 |
| 5 | 381 |
| 6 | 833 |
| 7 | 2163 |
| 8 | 5291 |
| 9 | 13317 |
| 10 | 33519 |
| 11 | 85179 |
| 12 | 213083 |
| 13 | 539212 |
| 14 | 1344272 |
| 15 | 3358571 |