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 | 0 |
| 2 | 5 |
| 3 | 13 |
| 4 | 50 |
| 5 | 213 |
| 6 | 536 |
| 7 | 536 |
| 8 | 4582 |
| 9 | 63202 |
| 10 | 163984 |