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 | 5 |
| 3 | 9 |
| 4 | 15 |
| 5 | 24 |
| 6 | 38 |
| 7 | 59 |
| 8 | 90 |
| 9 | 137 |
| 10 | 207 |
| 11 | 312 |
| 12 | 470 |
| 13 | 707 |
| 14 | 1062 |
| 15 | 1595 |
| 16 | 2394 |
| 17 | 3593 |
| 18 | 5391 |
| 19 | 8088 |