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 | 30 |
| 3 | 301 |
| 4 | 3011 |
| 5 | 30103 |
| 6 | 301031 |
| 7 | 3010300 |
| 8 | 30103001 |
| 9 | 301029995 |
| 10 | 3010299957 |
| 11 | 30102999568 |