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 | 1 |
| 4 | 3 |
| 5 | 5 |
| 6 | 1 |
| 7 | 7 |
| 8 | 18 |
| 9 | 12 |
| 10 | 2 |
| 11 | 24 |
| 12 | 65 |
| 13 | 73 |
| 14 | 34 |
| 15 | 5 |
| 16 | 133 |
| 17 | 276 |
| 18 | 399 |
| 19 | 309 |
| 20 | 123 |
| 21 | 18 |
| 22 | 1722 |
| 23 | 1595 |
| 24 | 2240 |
| 25 | 2331 |
| 26 | 1500 |
| 27 | 544 |
| 28 | 81 |