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 | 9 |
| 3 | 94 |
| 4 | 777 |
| 5 | 3286 |
| 6 | 10771 |
| 7 | 29366 |
| 8 | 69873 |
| 9 | 149950 |
| 10 | 297111 |
| 11 | 553114 |
| 12 | 980953 |
| 13 | 1677014 |
| 14 | 2793771 |
| 15 | 4584286 |
| 16 | 7492065 |
| 17 | 12335422 |
| 18 | 20688751 |
| 19 | 35673698 |
| 20 | 63602601 |
| 21 | 117391702 |
| 22 | 223644675 |
| 23 | 437338630 |
| 24 | 872239057 |
| 25 | 1763820926 |
| 26 | 3599298951 |
| 27 | 7386070186 |
| 28 | 15205369593 |
| 29 | 31353128470 |