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 | 9 |
| 2 | 10 |
| 3 | 225 |
| 4 | 714 |
| 5 | 6714 |
| 6 | 22114 |
| 7 | 2119209 |
| 8 | 2211449 |
| 9 | 102523609 |
| 10 | 942573334 |
| 11 | 95336514049 |
| 12 | 3333030289167658390 |