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) |
|---|---|
| 0 | 6 |
| 1 | 46 |
| 2 | 406 |
| 3 | 3646 |
| 4 | 32806 |
| 5 | 295246 |
| 6 | 2657206 |
| 7 | 23914846 |
| 8 | 215233606 |
| 9 | 1937102446 |
| 10 | 17433922006 |
| 11 | 156905298046 |
| 12 | 1412147682406 |
| 13 | 12709329141646 |
| 14 | 114383962274806 |
| 15 | 1029455660473246 |
| 16 | 9265100944259206 |
| 17 | 83385908498332846 |
| 18 | 750473176484995606 |