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 | 1 |
| 1 | 6 |
| 2 | 18 |
| 3 | 39 |
| 4 | 81 |
| 5 | 157 |
| 6 | 309 |
| 7 | 576 |
| 8 | 1042 |
| 9 | 1885 |
| 10 | 3338 |
| 11 | 6011 |
| 12 | 10569 |
| 13 | 18321 |
| 14 | 31851 |
| 15 | 55717 |
| 16 | 95320 |
| 17 | 163580 |
| 18 | 278208 |
| 19 | 478807 |
| 20 | 814329 |
| 21 | 1374926 |
| 22 | 2328359 |
| 23 | 3963782 |
| 24 | 6656320 |
| 25 | 11209356 |
| 26 | 18772741 |
| 27 | 31524784 |
| 28 | 53186481 |
| 29 | 88750072 |
| 30 | 148471480 |
| 31 | 247281057 |
| 32 | 415039507 |
| 33 | 692181268 |