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 | 41 |
| 3 | 27649987598537 |
| 4 | 30431463129071 |
| 5 | 58326356511581 |
| 6 | 161966446726157 |
| 7 | 291598227841757 |