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 | 2 |
| 2 | 11 |
| 3 | 233 |
| 4 | 4001 |
| 5 | 16771073 |
| 6 | 4294868993 |
| 7 | 68719083521 |
| 8 | 1152921502996234241 |
| 9 | 1329227995784915871174424803370074113 |
| 10 | 95780971304118053647396688732666809244153592049303553 |