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 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 12 |
| 4 | 19 |
| 5 | 46 |
| 6 | 88 |
| 7 | 185 |
| 8 | 380 |
| 9 | 793 |
| 10 | 1589 |
| 11 | 3106 |
| 12 | 6078 |
| 13 | 12147 |
| 14 | 24534 |
| 15 | 49482 |
| 16 | 99792 |
| 17 | 201892 |
| 18 | 408478 |