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) |
|---|---|
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 7 |
| 6 | 11 |
| 7 | 19 |
| 8 | 35 |
| 9 | 56 |
| 10 | 105 |
| 11 | 177 |
| 12 | 321 |
| 13 | 610 |
| 14 | 1001 |
| 15 | 1893 |
| 16 | 3186 |
| 17 | 5714 |
| 18 | 10073 |
| 19 | 18506 |