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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 9 |
| 5 | 14 |
| 6 | 15 |
| 7 | 29 |
| 8 | 33 |
| 9 | 45 |
| 10 | 81 |
| 11 | 102 |
| 12 | 105 |
| 13 | 126 |
| 14 | 142 |
| 15 | 157 |
| 16 | 288 |
| 17 | 414 |
| 18 | 1184 |
| 19 | 2133 |
| 20 | 10449 |
| 21 | 16369 |
| 22 | 17221 |
| 23 | 46524 |
| 24 | 214179 |
| 25 | 216741 |