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 | 0 |
| 1 | 2 |
| 2 | 6 |
| 3 | 17 |
| 4 | 36 |
| 5 | 99 |
| 6 | 249 |
| 7 | 651 |
| 8 | 1774 |
| 9 | 5018 |
| 10 | 13587 |
| 11 | 39170 |
| 12 | 115968 |
| 13 | 323061 |
| 14 | 953827 |
| 15 | 2870277 |
| 16 | 8165537 |
| 17 | 24569821 |