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 | 2 |
| 3 | 4 |
| 4 | 10 |
| 5 | 26 |
| 6 | 68 |
| 7 | 246 |
| 8 | 810 |
| 9 | 2704 |
| 10 | 7492 |
| 11 | 32066 |
| 12 | 86500 |
| 13 | 400024 |
| 14 | 1366500 |
| 15 | 4614524 |
| 16 | 18784170 |
| 17 | 68635478 |