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) |
|---|---|
| 2 | 15 |
| 3 | 80 |
| 4 | 4010 |
| 5 | 12031 |
| 6 | 255312 |
| 7 | 2686719 |
| 8 | 117178358 |
| 9 | 436210878 |
| 10 | 91532745555 |