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 | 5 |
| 6 | 53 |
| 7 | 56 |
| 8 | 343 |
| 9 | 908 |
| 10 | 1079 |
| 11 | 2204 |
| 12 | 2379 |
| 13 | 9134 |
| 14 | 9371 |
| 15 | 9728 |
| 16 | 11039 |
| 17 | 11247 |
| 18 | 13275 |
| 19 | 16781 |
| 20 | 20138 |
| 21 | 75368 |
| 22 | 87863 |