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 | 2 |
| 2 | 13 |
| 3 | 20 |
| 4 | 23 |
| 5 | 31 |
| 6 | 100 |
| 7 | 241 |
| 8 | 275 |
| 9 | 925 |
| 10 | 1067 |
| 11 | 1369 |
| 12 | 2065 |
| 13 | 7163 |
| 14 | 37963 |
| 15 | 91856 |
| 16 | 111706 |
| 17 | 260198 |
| 18 | 271757 |
| 19 | 314564 |
| 20 | 348724 |