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 | 50 |
| 2 | 144 |
| 3 | 422 |
| 4 | 1268 |
| 5 | 3823 |
| 6 | 11472 |
| 7 | 34350 |
| 8 | 102896 |
| 9 | 308419 |
| 10 | 924532 |
| 11 | 2771101 |
| 12 | 8305373 |
| 13 | 24892609 |
| 14 | 74608516 |
| 15 | 223618304 |
| 16 | 670231838 |
| 17 | 2008825312 |
| 18 | 6020872062 |
| 19 | 18045827096 |
| 20 | 54087163859 |
| 21 | 162110668160 |
| 22 | 485879938474 |
| 23 | 1456284886944 |
| 24 | 4364793695063 |