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 | 2 |
| 2 | 2 |
| 3 | 5 |
| 4 | 101 |
| 5 | 13241 |
| 6 | 151537 |
| 7 | 66848890001808737 |
| 8 | 8602289657912317933269334679427588251509673524841616601 |