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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 9 |
| 7 | 17 |
| 8 | 33 |
| 9 | 60 |
| 10 | 108 |
| 11 | 202 |
| 12 | 360 |
| 13 | 703 |
| 14 | 1328 |
| 15 | 2519 |
| 16 | 4779 |
| 17 | 9103 |
| 18 | 17501 |
| 19 | 33473 |
| 20 | 64761 |