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 | 3011 |
| 2 | 818509 |
| 3 | 827239906198908668183 |
| 4 | 3877924263464448622408024944643162574255380546190593937673127995497376385062869 |