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 | 76 |
| 3 | 559 |
| 4 | 843 |
| 5 | 1239 |
| 6 | 3976 |
| 7 | 5620 |
| 8 | 7920 |
| 9 | 23859 |
| 10 | 33439 |
| 11 | 46843 |
| 12 | 139740 |
| 13 | 195576 |
| 14 | 273700 |
| 15 | 815143 |
| 16 | 1140579 |
| 17 | 1595919 |
| 18 | 4751680 |
| 19 | 6648460 |
| 20 | 9302376 |
| 21 | 27695499 |
| 22 | 38750743 |
| 23 | 54218899 |
| 24 | 161421876 |
| 25 | 225856560 |
| 26 | 316011580 |
| 27 | 940836319 |
| 28 | 1316389179 |
| 29 | 1841851143 |
| 30 | 5483596600 |