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 | 2 |
| 2 | 2 |
| 3 | 6 |
| 4 | 8 |
| 5 | 4 |
| 6 | 18 |
| 7 | 38 |
| 8 | 48 |
| 9 | 40 |
| 10 | 16 |
| 11 | 80 |
| 12 | 210 |
| 13 | 402 |
| 14 | 644 |
| 15 | 852 |
| 16 | 928 |
| 17 | 912 |
| 18 | 704 |
| 19 | 256 |
| 20 | 1344 |
| 21 | 3944 |
| 22 | 9276 |
| 23 | 19448 |
| 24 | 37090 |
| 25 | 65602 |
| 26 | 107388 |
| 27 | 160760 |
| 28 | 220200 |