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 | 241 |
| 2 | 5521 |
| 3 | 6481 |
| 4 | 51361 |
| 5 | 346561 |
| 6 | 380881 |
| 7 | 390001 |
| 8 | 1678321 |
| 9 | 4332721 |
| 10 | 4654801 |
| 11 | 5576881 |
| 12 | 12707521 |
| 13 | 39336721 |
| 14 | 41432641 |
| 15 | 42942001 |
| 16 | 99990001 |
| 17 | 167948881 |
| 18 | 184970641 |
| 19 | 197063761 |
| 20 | 205598881 |