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 | 2 |
| 3 | 27 |
| 4 | 36 |
| 5 | 405 |
| 6 | 11682 |
| 7 | 33651 |
| 8 | 669024 |
| 9 | 25274655 |
| 10 | 40809168 |
| 11 | 59716233 |
| 12 | 7932651138 |
| 13 | 367732181646 |