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 | 2187 |
| 2 | 16887 |
| 3 | 5167013 |
| 4 | 114689693 |
| 5 | 15524812691 |
| 6 | 590246442003 |
| 7 | 54444733905291 |
| 8 | 2737406862058121 |