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 | 15 |
| 4 | 35 |
| 5 | 81 |
| 6 | 173 |
| 7 | 357 |
| 8 | 725 |
| 9 | 1461 |
| 10 | 2933 |
| 11 | 5877 |
| 12 | 11765 |
| 13 | 23541 |
| 14 | 47093 |
| 15 | 94197 |
| 16 | 188405 |