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 | 3 |
| 3 | 4 |
| 4 | 11 |
| 5 | 87 |
| 6 | 193 |
| 7 | 386 |
| 8 | 579 |
| 9 | 1457 |
| 10 | 23225 |
| 11 | 49171 |
| 12 | 98342 |
| 13 | 147513 |
| 14 | 196684 |
| 15 | 566827 |
| 16 | 13580623 |
| 17 | 28245729 |
| 18 | 56491458 |
| 19 | 84737187 |
| 20 | 112982916 |
| 21 | 438351041 |
| 22 | 466596770 |
| 23 | 494842499 |