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 | 3 |
| 2 | 5 |
| 3 | 6 |
| 4 | 10 |
| 5 | 22 |
| 6 | 61 |
| 7 | 85 |
| 8 | 86 |
| 9 | 268 |
| 10 | 304 |
| 11 | 606 |
| 12 | 808 |
| 13 | 2706 |
| 14 | 3771 |
| 15 | 5047 |
| 16 | 6288 |
| 17 | 6298 |
| 18 | 7631 |
| 19 | 7643 |
| 20 | 14683 |
| 21 | 27620 |