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) |
|---|---|
| 2 | 27 |
| 3 | 84 |
| 4 | 265 |
| 5 | 837 |
| 6 | 2646 |
| 7 | 8367 |
| 8 | 26458 |
| 9 | 83667 |
| 10 | 264576 |
| 11 | 836661 |
| 12 | 2645752 |
| 13 | 8366601 |
| 14 | 26457514 |
| 15 | 83666003 |
| 16 | 264575132 |
| 17 | 836660027 |
| 18 | 2645751312 |
| 19 | 8366600266 |
| 20 | 26457513111 |
| 21 | 83666002654 |
| 22 | 264575131107 |
| 23 | 836660026535 |
| 24 | 2645751311065 |