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) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 54 |
| 3 | 321 |
| 4 | 1847 |
| 5 | 9992 |
| 6 | 50136 |
| 7 | 227536 |
| 8 | 870072 |
| 9 | 1887748 |
| 10 | 623800 |
| 11 | 2644 |