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 | 0 |
| 2 | 2 |
| 3 | 6 |
| 4 | 8 |
| 5 | 20 |
| 6 | 38 |
| 7 | 96 |
| 8 | 146 |
| 9 | 236 |
| 10 | 458 |
| 11 | 726 |
| 12 | 962 |
| 13 | 1422 |
| 14 | 2864 |
| 15 | 3858 |
| 16 | 5228 |
| 17 | 9822 |
| 18 | 21774 |
| 19 | 32336 |
| 20 | 33336 |
| 21 | 43556 |