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 | 4 |
| 3 | 10 |
| 4 | 32 |
| 5 | 22 |
| 6 | 4120 |
| 7 | 488 |
| 8 | 65864 |
| 9 | 166 |
| 10 | 1296 |
| 11 | 872 |
| 12 | 37652512 |
| 13 | 678412 |
| 14 | 1858036816 |
| 15 | 337856 |