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 | 3 |
| 2 | 7 |
| 3 | 727 |
| 4 | 1595287 |
| 5 | 3773335151 |
| 6 | 53968982887 |
| 7 | 218662611751 |
| 8 | 373627441111 |
| 9 | 525882352087 |
| 10 | 612618285511 |