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 | 3 |
| 2 | 4 |
| 3 | 5 |
| 4 | 6 |
| 5 | 10 |
| 6 | 23 |
| 7 | 30 |
| 8 | 33 |
| 9 | 64 |
| 10 | 189 |
| 11 | 207 |
| 12 | 213 |
| 13 | 463 |
| 14 | 547 |
| 15 | 1225 |
| 16 | 1795 |
| 17 | 3726 |
| 18 | 3947 |
| 19 | 4989 |
| 20 | 5226 |
| 21 | 9825 |
| 22 | 11489 |
| 23 | 12666 |
| 24 | 14512 |
| 25 | 19588 |
| 26 | 28795 |
| 27 | 29903 |
| 28 | 31889 |
| 29 | 71357 |