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 | 2 |
| 2 | 72 |
| 3 | 322 |
| 4 | 1718 |
| 5 | 2904 |
| 6 | 9834 |
| 7 | 13324 |
| 8 | 31000 |
| 9 | 49910 |
| 10 | 84760 |
| 11 | 98226 |
| 12 | 211526 |
| 13 | 234336 |
| 14 | 325654 |
| 15 | 454612 |
| 16 | 691052 |
| 17 | 742006 |
| 18 | 1152832 |
| 19 | 1224538 |
| 20 | 1765938 |