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 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 27 |
| 5 | 76 |
| 6 | 192 |
| 7 | 456 |
| 8 | 1045 |
| 9 | 2344 |
| 10 | 5186 |
| 11 | 11364 |
| 12 | 24719 |
| 13 | 53444 |
| 14 | 114948 |
| 15 | 246096 |
| 16 | 524713 |
| 17 | 1114640 |
| 18 | 2359942 |
| 19 | 4981516 |
| 20 | 10486691 |
| 21 | 22021196 |
| 22 | 46138632 |
| 23 | 96470488 |
| 24 | 201328317 |
| 25 | 419432376 |
| 26 | 872417482 |
| 27 | 1811941876 |
| 28 | 3758099255 |
| 29 | 7784631444 |
| 30 | 16106130956 |
| 31 | 33286000544 |