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 | 42 |
| 2 | 402 |
| 3 | 492 |
| 4 | 4000002 |
| 5 | 57906504 |
| 6 | 400000002 |
| 7 | 4000000002 |
| 8 | 6279090751 |
| 9 | 62698513951 |
| 10 | 400000000002 |