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) |
|---|---|
| 0 | 1 |
| 1 | 131073 |
| 2 | 129271235 |
| 3 | 17309009347 |
| 4 | 780119322309 |
| 5 | 17689598897861 |
| 6 | 249557173431943 |
| 7 | 2484430327672455 |
| 8 | 18928981513351817 |
| 9 | 116677181699666569 |
| 10 | 605447028499293771 |
| 11 | 2724058135239730763 |
| 12 | 10869027026121774925 |