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 | 7 |
| 3 | 337 |
| 4 | 38272417 |
| 5 | 56060590716839257663297 |
| 6 | 176186654453940966415101758343368831005891099500239113100063334235777 |