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 | 6 |
| 2 | 43 |
| 3 | 336 |
| 4 | 2932 |
| 5 | 26870 |
| 6 | 252756 |
| 7 | 2409731 |
| 8 | 23169860 |
| 9 | 224059958 |
| 10 | 2175865640 |