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 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 25 |
| 5 | 73 |
| 6 | 204 |
| 7 | 565 |
| 8 | 1557 |
| 9 | 4275 |
| 10 | 11710 |
| 11 | 32022 |
| 12 | 87464 |
| 13 | 238692 |
| 14 | 650971 |
| 15 | 1774466 |