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 | 41 |
| 2 | 291552 |
| 3 | 692133 |
| 4 | 2946762 |
| 5 | 8231796 |
| 6 | 21732508611 |
| 7 | 27892659612 |