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 | 4 |
| 3 | 6 |
| 4 | 12 |
| 5 | 12 |
| 6 | 40 |
| 7 | 28 |
| 8 | 96 |
| 9 | 104 |
| 10 | 280 |
| 11 | 216 |
| 12 | 1248 |
| 13 | 704 |
| 14 | 2800 |
| 15 | 4344 |
| 16 | 8928 |
| 17 | 8232 |
| 18 | 44224 |
| 19 | 29204 |
| 20 | 136032 |
| 21 | 176752 |
| 22 | 419872 |
| 23 | 381492 |
| 24 | 2150400 |
| 25 | 1678256 |
| 26 | 5594000 |
| 27 | 7461168 |
| 28 | 22553408 |
| 29 | 19175160 |
| 30 | 134391040 |
| 31 | 71585136 |
| 32 | 269510016 |
| 33 | 429726240 |
| 34 | 1073758360 |