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 | 0 |
| 1 | 1 |
| 2 | 14 |
| 3 | 149 |
| 4 | 1506 |
| 5 | 15085 |
| 6 | 150886 |
| 7 | 1508909 |
| 8 | 15089154 |
| 9 | 150891621 |
| 10 | 1508916310 |
| 11 | 15089163221 |
| 12 | 150891632354 |
| 13 | 1508916323709 |
| 14 | 15089163237286 |
| 15 | 150891632373085 |
| 16 | 1508916323731106 |
| 17 | 15089163237311349 |
| 18 | 150891632373113814 |