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 | 17 |
| 2 | 162287 |
| 3 | 2486784401 |
| 4 | 83695120256591 |
| 5 | 84721522804414816904952398305908708011513455440403306207160333176150520399 |