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 | 0 |
| 2 | 9 |
| 3 | 60 |
| 4 | 79 |
| 5 | 59 |
| 6 | 137 |
| 7 | 479 |
| 8 | 2897 |
| 9 | 1397 |
| 10 | 24474 |
| 11 | 63515 |
| 12 | 71287 |
| 13 | 191542 |
| 14 | 1432289 |
| 15 | 1766633 |
| 16 | 1380465 |
| 17 | 2894629 |
| 18 | 1464385 |
| 19 | 10676561 |