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 | 1 |
| 1 | 15 |
| 2 | 171 |
| 3 | 1795 |
| 4 | 18291 |
| 5 | 184275 |
| 6 | 1848211 |
| 7 | 18503955 |
| 8 | 185126931 |
| 9 | 1851618835 |
| 10 | 18517586451 |
| 11 | 185181456915 |
| 12 | 1851836938771 |
| 13 | 18518458866195 |
| 14 | 185184946575891 |
| 15 | 1851850897414675 |
| 16 | 18518514700769811 |
| 17 | 185185169914190355 |