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 | 5 |
| 5 | 25 |
| 6 | 85 |
| 7 | 92 |
| 8 | 97 |
| 9 | 649 |
| 10 | 2017 |
| 11 | 2978 |
| 12 | 3577 |
| 13 | 4985 |
| 14 | 17978 |
| 15 | 21365 |
| 16 | 66002 |
| 17 | 95305 |
| 18 | 142199 |