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 | 4 |
| 4 | 14 |
| 5 | 22 |
| 6 | 26 |
| 7 | 36 |
| 8 | 216 |
| 9 | 354 |
| 10 | 874 |
| 11 | 1018 |
| 12 | 2798 |
| 13 | 6116 |
| 14 | 6574 |
| 15 | 6922 |
| 16 | 8090 |
| 17 | 8398 |
| 18 | 12866 |
| 19 | 20816 |
| 20 | 54810 |