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 | 3 |
| 2 | 7 |
| 3 | 18 |
| 4 | 35 |
| 5 | 84 |
| 6 | 222 |
| 7 | 459 |
| 8 | 1186 |
| 9 | 2099 |
| 10 | 4731 |
| 11 | 8093 |
| 12 | 19674 |
| 13 | 49289 |
| 14 | 102408 |
| 15 | 242522 |
| 16 | 659653 |