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 | 0 |
| 2 | 9 |
| 3 | 31 |
| 4 | 975 |
| 5 | 297097 |
| 6 | 816867 |
| 7 | 4148165871 |
| 8 | 152488124529 |
| 9 | 1632977901693 |
| 10 | 11162529166917 |
| 11 | 11925833175477 |
| 12 | 3047549778123957 |
| 13 | 3894487365191355 |
| 14 | 8920885515768255 |