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 | 0 |
| 2 | 1 |
| 3 | 14 |
| 4 | 195 |
| 5 | 2200 |
| 6 | 24013 |
| 7 | 255969 |
| 8 | 2687317 |
| 9 | 27934809 |
| 10 | 288342379 |
| 11 | 2960920297 |
| 12 | 30285890402 |
| 13 | 308834717932 |
| 14 | 3141625339760 |
| 15 | 31895159990436 |