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 | 2 |
| 2 | 14 |
| 3 | 126 |
| 4 | 1238 |
| 5 | 12517 |
| 6 | 124973 |
| 7 | 1249931 |
| 8 | 12500186 |
| 9 | 125000681 |
| 10 | 1250005179 |