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 | 31 |
| 3 | 380 |
| 4 | 4990 |
| 5 | 54268 |
| 6 | 581858 |
| 7 | 6214940 |
| 8 | 67420394 |
| 9 | 703398930 |
| 10 | 7316745778 |
| 11 | 75645891943 |