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 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 6 |
| 8 | 121 |
| 9 | 178 |
| 10 | 235 |
| 11 | 292 |
| 12 | 300 |
| 13 | 2997 |
| 14 | 6953 |
| 15 | 7801 |
| 16 | 10658 |
| 17 | 13459 |
| 18 | 16708 |
| 19 | 428585 |
| 20 | 431721 |
| 21 | 444713 |
| 22 | 447849 |
| 23 | 450985 |
| 24 | 502457 |
| 25 | 626778 |
| 26 | 786435 |
| 27 | 10453500 |
| 28 | 27924649 |