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 | 3 |
| 2 | 4 |
| 3 | 8 |
| 4 | 20 |
| 5 | 40 |
| 6 | 230 |
| 7 | 260 |
| 8 | 680 |
| 9 | 1910 |
| 10 | 2120 |
| 11 | 6670 |
| 12 | 9710 |
| 13 | 10310 |
| 14 | 23500 |
| 15 | 25220 |
| 16 | 37990 |
| 17 | 71800 |