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 | 5 |
| 3 | 6 |
| 4 | 12 |
| 5 | 17 |
| 6 | 19 |
| 7 | 61 |
| 8 | 102 |
| 9 | 195 |
| 10 | 447 |
| 11 | 1250 |
| 12 | 1329 |
| 13 | 1935 |
| 14 | 3930 |
| 15 | 5837 |
| 16 | 7176 |
| 17 | 8724 |
| 18 | 20881 |
| 19 | 23936 |
| 20 | 61868 |
| 21 | 91920 |