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 | 5 |
| 4 | 13 |
| 5 | 65 |
| 6 | 85 |
| 7 | 229 |
| 8 | 2005 |
| 9 | 3875 |
| 10 | 3919 |
| 11 | 5417 |
| 12 | 8819 |
| 13 | 11899 |
| 14 | 16668 |
| 15 | 19445 |
| 16 | 28242 |
| 17 | 33407 |
| 18 | 37918 |
| 19 | 40594 |
| 20 | 141251 |