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 | 23 |
| 3 | 303 |
| 4 | 3503 |
| 5 | 44448 |
| 6 | 487900 |
| 7 | 5289359 |
| 8 | 57794031 |
| 9 | 658775109 |
| 10 | 7212208422 |
| 11 | 77028673251 |