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 | 4 |
| 2 | 28 |
| 3 | 300 |
| 4 | 3033 |
| 5 | 30389 |
| 6 | 303947 |
| 7 | 3039643 |
| 8 | 30396338 |
| 9 | 303963527 |
| 10 | 3039635535 |
| 11 | 30396355364 |
| 12 | 303963551074 |
| 13 | 3039635509269 |
| 14 | 30396355092700 |
| 15 | 303963550926732 |
| 16 | 3039635509266675 |
| 17 | 30396355092702331 |
| 18 | 303963550927021020 |