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 | 18 |
| 3 | 242 |
| 4 | 3343 |
| 5 | 46683 |
| 6 | 605489 |
| 7 | 7221246 |
| 8 | 80884939 |
| 9 | 865304098 |