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 | 12 |
| 3 | 20 |
| 4 | 68 |
| 5 | 90 |
| 6 | 98 |
| 7 | 132 |
| 8 | 252 |
| 9 | 318 |
| 10 | 362 |
| 11 | 398 |
| 12 | 1722 |
| 13 | 259668 |
| 14 | 315180 |
| 15 | 452042 |