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 | 3 |
| 5 | 4 |
| 6 | 13 |
| 7 | 88 |
| 8 | 177 |
| 9 | 184 |
| 10 | 297 |
| 11 | 304 |
| 12 | 310 |
| 13 | 562 |
| 14 | 892 |
| 15 | 1300 |
| 16 | 4047 |
| 17 | 5557 |
| 18 | 9028 |
| 19 | 15597 |
| 20 | 28527 |
| 21 | 56890 |
| 22 | 77485 |
| 23 | 79378 |