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 | 1 |
| 2 | 295 |
| 3 | 455 |
| 4 | 4361 |
| 5 | 10817 |
| 6 | 132680789 |
| 7 | 334931875 |
| 8 | 957643538339 |
| 9 | 82185210732157 |