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 | 5 |
| 3 | 2071 |
| 4 | 33421 |
| 5 | 58061 |
| 6 | 1977071 |
| 7 | 7011161 |
| 8 | 10144571 |
| 9 | 10189721 |
| 10 | 166311841 |
| 11 | 173618771 |
| 12 | 215766701 |
| 13 | 240623221 |
| 14 | 341359721 |
| 15 | 341455271 |
| 16 | 389192441 |
| 17 | 490814481 |
| 18 | 524456461 |
| 19 | 585387477 |
| 20 | 888576461 |
| 21 | 1123952441 |
| 22 | 1276706071 |
| 23 | 2005030751 |
| 24 | 2244832943 |
| 25 | 2863311531 |
| 26 | 3104590331 |
| 27 | 3904529471 |