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 | 11 |
| 2 | 101 |
| 3 | 151 |
| 4 | 1598951 |
| 5 | 1128512158211 |
| 6 | 104216919612401 |
| 7 | 107635959536701 |
| 8 | 106906347292743609601 |
| 9 | 165901968762984246868642489267869109561 |