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 | 3 |
| 3 | 6 |
| 4 | 14 |
| 5 | 24 |
| 6 | 40 |
| 7 | 48 |
| 8 | 51 |
| 9 | 54 |
| 10 | 57 |
| 11 | 60 |
| 12 | 120 |
| 13 | 440 |
| 14 | 450 |
| 15 | 1246 |
| 16 | 1824 |
| 17 | 2280 |
| 18 | 8802 |
| 19 | 12720 |
| 20 | 29019 |
| 21 | 36720 |
| 22 | 37245 |
| 23 | 55428 |
| 24 | 74822 |
| 25 | 81480 |
| 26 | 133950 |
| 27 | 169435 |
| 28 | 441030 |