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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 2 |
| 8 | 1 |
| 9 | 5 |
| 10 | 3 |
| 11 | 5 |
| 12 | 2 |
| 13 | 27 |
| 14 | 4 |
| 15 | 78 |
| 16 | 14 |
| 17 | 152 |
| 18 | 551 |
| 19 | 1331 |
| 20 | 7377 |
| 21 | 15504 |
| 22 | 87583 |
| 23 | 190028 |
| 24 | 768864 |
| 25 | 1510305 |
| 26 | 5413291 |
| 27 | 12221733 |