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 | 6 |
| 2 | 36 |
| 3 | 82 |
| 4 | 217 |
| 5 | 499 |
| 6 | 1014 |
| 7 | 2141 |
| 8 | 4188 |
| 9 | 8150 |
| 10 | 15670 |
| 11 | 29517 |
| 12 | 55523 |
| 13 | 103348 |
| 14 | 191593 |
| 15 | 353916 |
| 16 | 651316 |
| 17 | 1196664 |
| 18 | 2193747 |
| 19 | 4017137 |
| 20 | 7347906 |
| 21 | 13429145 |
| 22 | 24530862 |
| 23 | 44784850 |
| 24 | 81739060 |
| 25 | 149141623 |
| 26 | 272067741 |
| 27 | 496250336 |
| 28 | 905026713 |
| 29 | 1650411906 |