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 | 14 |
| 1 | 78 |
| 2 | 426 |
| 3 | 2286 |
| 4 | 12090 |
| 5 | 63198 |
| 6 | 327306 |
| 7 | 1682766 |
| 8 | 8601690 |
| 9 | 43768638 |
| 10 | 221910186 |
| 11 | 1121897646 |
| 12 | 5659111290 |
| 13 | 28494757278 |
| 14 | 143272715466 |
| 15 | 719565670926 |
| 16 | 3610655860890 |
| 17 | 18104646725118 |
| 18 | 90728875495146 |
| 19 | 454467461514606 |
| 20 | 2275631193410490 |
| 21 | 11391336159448158 |
| 22 | 57009415513961226 |
| 23 | 285258058278100686 |
| 24 | 1427134339747920090 |