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 | 2530 |
| 2 | 59455 |
| 3 | 4112125651 |
| 4 | 66487065301 |
| 5 | 1069364586601 |
| 6 | 4313828719351 |
| 7 | 146264252084551 |
| 8 | 252626415665851 |
| 9 | 3398860950259501 |
| 10 | 10045301361318901 |
| 11 | 110736954977078251 |