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 | 28 |
| 4 | 216 |
| 5 | 1790 |
| 6 | 15587 |
| 7 | 140746 |
| 8 | 1305920 |
| 9 | 12374069 |
| 10 | 119223556 |
| 11 | 1164465225 |
| 12 | 11502924648 |
| 13 | 114721053058 |
| 14 | 1153539900783 |