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) |
|---|---|
| 13 | 1 |
| 14 | 2 |
| 15 | 9 |
| 16 | 21 |
| 17 | 76 |
| 18 | 191 |
| 19 | 581 |
| 20 | 1498 |
| 21 | 4289 |
| 22 | 11178 |
| 23 | 30228 |
| 24 | 78312 |
| 25 | 203322 |