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 | 2 |
| 1 | 2 |
| 2 | 12 |
| 3 | 32 |
| 4 | 112 |
| 5 | 352 |
| 6 | 1152 |
| 7 | 3712 |
| 8 | 12032 |
| 9 | 38912 |
| 10 | 125952 |
| 11 | 407552 |
| 12 | 1318912 |
| 13 | 4268032 |
| 14 | 13811712 |
| 15 | 44695552 |
| 16 | 144637952 |
| 17 | 468058112 |
| 18 | 1514668032 |
| 19 | 4901568512 |
| 20 | 15861809152 |
| 21 | 51329892352 |
| 22 | 166107021312 |
| 23 | 537533612032 |
| 24 | 1739495309312 |