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 | 6 |
| 2 | 63 |
| 3 | 563 |
| 4 | 1563 |
| 5 | 1632 |
| 6 | 3216 |
| 7 | 12316 |
| 8 | 23266 |
| 9 | 66321 |
| 10 | 66321 |
| 11 | 76923 |
| 12 | 76923 |
| 13 | 156328 |
| 14 | 280692 |
| 15 | 566331 |
| 16 | 566331 |
| 17 | 566331 |
| 18 | 2307692 |
| 19 | 2307692 |
| 20 | 2307692 |
| 21 | 2307692 |
| 22 | 2307692 |
| 23 | 2307692 |
| 24 | 2307692 |
| 25 | 2307692 |
| 26 | 11533664 |
| 27 | 23306676 |
| 28 | 23306676 |
| 29 | 23306676 |
| 30 | 23306676 |