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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 12 |
| 7 | 47375 |
| 8 | 2310399 |
| 9 | 3525200 |
| 10 | 6506367 |
| 11 | 9388224 |
| 12 | 17613504 |
| 13 | 29373839 |
| 14 | 41534800 |
| 15 | 48191759 |
| 16 | 48344120 |
| 17 | 66927384 |
| 18 | 68094999 |
| 19 | 71982999 |
| 20 | 92547279 |
| 21 | 95497919 |
| 22 | 110146959 |
| 23 | 110395439 |
| 24 | 126123920 |
| 25 | 148865535 |
| 26 | 152546030 |
| 27 | 154451583 |
| 28 | 171570069 |
| 29 | 193628799 |
| 30 | 232058519 |