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 | 4 |
| 5 | 9 |
| 6 | 18 |
| 7 | 22 |
| 8 | 45 |
| 9 | 49 |
| 10 | 56 |
| 11 | 69 |
| 12 | 146 |
| 13 | 202 |
| 14 | 272 |
| 15 | 2730 |
| 16 | 2841 |
| 17 | 4562 |
| 18 | 31810 |
| 19 | 43186 |
| 20 | 48109 |
| 21 | 92691 |
| 22 | 237670 |
| 23 | 400310 |
| 24 | 482706 |