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 | 32 |
| 2 | 268 |
| 3 | 2292 |
| 4 | 19748 |
| 5 | 170904 |
| 6 | 1483284 |
| 7 | 12899556 |
| 8 | 112350184 |
| 9 | 979640156 |
| 10 | 8549531716 |
| 11 | 74665238648 |
| 12 | 652426700120 |
| 13 | 5703387501520 |
| 14 | 49875030912772 |
| 15 | 436266613941484 |
| 16 | 3816936851122500 |
| 17 | 33400491065984904 |
| 18 | 292314430831005104 |