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 | 7 |
| 3 | 34 |
| 4 | 743 |
| 5 | 1546 |
| 6 | 598078 |
| 7 | 6027057 |
| 8 | 10163241031 |
| 9 | 242407820869 |