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 | 2 |
| 1 | 17 |
| 2 | 727 |
| 3 | 47527 |
| 4 | 29002021 |
| 5 | 494501773 |
| 6 | 44633461423 |
| 7 | 7489886099881 |