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 | 6 |
| 2 | 54 |
| 3 | 532 |
| 4 | 4675 |
| 5 | 34425 |
| 6 | 262549 |
| 7 | 2051466 |
| 8 | 16831152 |
| 9 | 155616459 |
| 10 | 1529462564 |
| 11 | 14830618421 |
| 12 | 141585123501 |