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 | 92 |
| 8 | 135 |
| 9 | 178 |
| 10 | 185 |
| 11 | 5854 |
| 12 | 6148 |
| 13 | 7703 |
| 14 | 186621 |
| 15 | 204856 |
| 16 | 206620 |
| 17 | 213970 |
| 18 | 269957 |
| 19 | 271721 |
| 20 | 279071 |
| 21 | 4252232 |
| 22 | 160258808 |
| 23 | 9689802280 |
| 24 | 203509031168 |
| 25 | 204191148800 |
| 26 | 231773764784 |
| 27 | 321015775216 |
| 28 | 4102350269485 |
| 29 | 12262956787888 |