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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 9 |
| 5 | 66 |
| 6 | 164 |
| 7 | 221 |
| 8 | 224 |
| 9 | 2058 |
| 10 | 3224 |
| 11 | 12284 |
| 12 | 13457 |
| 13 | 22277 |
| 14 | 22761 |
| 15 | 83381 |