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 | 32 |
| 2 | 1215 |
| 3 | 2590623 |
| 4 | 2146909373 |
| 5 | 105636978090621 |
| 6 | 3269698976575137500 |