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 | 3 |
| 3 | 5 |
| 4 | 17 |
| 5 | 70 |
| 6 | 61 |
| 7 | 155 |
| 8 | 1143 |
| 9 | 2317 |
| 10 | 1385 |
| 11 | 2073 |
| 12 | 23716 |
| 13 | 82286 |
| 14 | 110556 |
| 15 | 50521 |
| 16 | 38227 |
| 17 | 623753 |
| 18 | 3243270 |
| 19 | 7258090 |
| 20 | 7293671 |
| 21 | 2702765 |
| 22 | 929569 |
| 23 | 20454498 |
| 24 | 147624355 |
| 25 | 484343420 |
| 26 | 796220487 |
| 27 | 639139202 |
| 28 | 199360981 |