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 | 5 |
| 3 | 11 |
| 4 | 23 |
| 5 | 48 |
| 6 | 97 |
| 7 | 196 |
| 8 | 393 |
| 9 | 787 |
| 10 | 1576 |
| 11 | 3153 |
| 12 | 6308 |
| 13 | 12617 |
| 14 | 25235 |
| 15 | 50472 |
| 16 | 100945 |
| 17 | 201892 |
| 18 | 403785 |