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 | 8 |
| 2 | 16 |
| 3 | 40 |
| 4 | 96 |
| 5 | 232 |
| 6 | 560 |
| 7 | 1336 |
| 8 | 3176 |
| 9 | 7480 |
| 10 | 17528 |
| 11 | 40776 |
| 12 | 94336 |
| 13 | 216976 |
| 14 | 496432 |
| 15 | 1130120 |
| 16 | 2560648 |
| 17 | 5776304 |
| 18 | 12976112 |
| 19 | 29036008 |
| 20 | 64732992 |
| 21 | 143814192 |
| 22 | 318455632 |
| 23 | 702983256 |
| 24 | 1547254832 |
| 25 | 3395989288 |
| 26 | 7433962168 |
| 27 | 16232357608 |
| 28 | 35359307144 |
| 29 | 76848753032 |
| 30 | 166658534216 |