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 | 9 |
| 3 | 71 |
| 4 | 120 |
| 5 | 331 |
| 6 | 393 |
| 7 | 728 |
| 8 | 1223 |
| 9 | 3697 |
| 10 | 4123 |
| 11 | 6791 |
| 12 | 7391 |
| 13 | 23911 |
| 14 | 25099 |
| 15 | 35287 |
| 16 | 86442 |
| 17 | 86716 |
| 18 | 118034 |
| 19 | 292411 |
| 20 | 352970 |
| 21 | 527255 |
| 22 | 606425 |