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 | 33 |
| 3 | 308 |
| 4 | 3050 |
| 5 | 30405 |
| 6 | 303979 |
| 7 | 3039648 |
| 8 | 30396356 |
| 9 | 303963597 |
| 10 | 3039635407 |
| 11 | 30396354916 |
| 12 | 303963551200 |
| 13 | 3039635509025 |
| 14 | 30396355093247 |
| 15 | 303963550927371 |
| 16 | 3039635509273730 |
| 17 | 30396355092701463 |
| 18 | 303963550927001730 |