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 | 2 |
| 1 | 26 |
| 2 | 242 |
| 3 | 2186 |
| 4 | 19682 |
| 5 | 177146 |
| 6 | 1594322 |
| 7 | 14348906 |
| 8 | 129140162 |
| 9 | 1162261466 |
| 10 | 10460353202 |
| 11 | 94143178826 |
| 12 | 847288609442 |
| 13 | 7625597484986 |
| 14 | 68630377364882 |
| 15 | 617673396283946 |
| 16 | 5559060566555522 |
| 17 | 50031545098999706 |
| 18 | 450283905890997362 |