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 | 3 |
| 2 | 57 |
| 3 | 111317 |
| 4 | 19293141 |
| 5 | 4359617173 |
| 6 | 101103107109137139 |
| 7 | 149151179181191193197 |
| 8 | 199227229239241269271281 |
| 9 | 283311313347349419421431433 |
| 10 | 461463521523569571599601617619 |