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) |
|---|---|
| 0 | 0 |
| 1 | 5 |
| 2 | 25 |
| 3 | 83 |
| 4 | 219 |
| 5 | 221 |
| 6 | 2270 |
| 7 | 11020 |
| 8 | 18843 |
| 9 | 192915 |
| 10 | 271978 |
| 11 | 743748 |
| 12 | 1039315 |
| 13 | 13873203 |
| 14 | 14060685 |