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 | 1681 |
| 2 | 5251 |
| 3 | 7771 |
| 4 | 36961 |
| 5 | 39271 |
| 6 | 170941 |
| 7 | 196351 |
| 8 | 360361 |
| 9 | 510511 |
| 10 | 1009471 |
| 11 | 9699691 |