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 | 5 |
| 2 | 3 |
| 3 | 2 |
| 4 | 31 |
| 5 | 19 |
| 6 | 431 |
| 7 | 3457 |
| 8 | 24907963 |
| 9 | 250198320553451 |
| 10 | 164072502171958410481596412086571 |
| 11 | 15268641997545743809809010755124846521575738536063 |