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 | 151 |
| 3 | 543 |
| 4 | 10707 |
| 5 | 33151 |
| 6 | 345283 |
| 7 | 2213663 |
| 8 | 33629695 |
| 9 | 134297599 |
| 10 | 1109207903 |
| 11 | 8657682303 |
| 12 | 73283989519 |