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 | 1 |
| 2 | 12 |
| 3 | 19 |
| 4 | 22 |
| 5 | 30 |
| 6 | 99 |
| 7 | 240 |
| 8 | 274 |
| 9 | 924 |
| 10 | 1066 |
| 11 | 1368 |
| 12 | 2064 |
| 13 | 7162 |
| 14 | 37962 |
| 15 | 91855 |
| 16 | 111705 |
| 17 | 260197 |
| 18 | 271756 |
| 19 | 314563 |
| 20 | 348723 |