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 | 4 |
| 2 | 6 |
| 3 | 12 |
| 4 | 30 |
| 5 | 98 |
| 6 | 220 |
| 7 | 308 |
| 8 | 556 |
| 9 | 992 |
| 10 | 2642 |
| 11 | 5372 |
| 12 | 7426 |
| 13 | 43532 |
| 14 | 54244 |
| 15 | 63274 |
| 16 | 113672 |
| 17 | 128168 |
| 18 | 194428 |
| 19 | 194470 |
| 20 | 413572 |
| 21 | 503222 |
| 22 | 1077422 |
| 23 | 3526958 |
| 24 | 3807404 |
| 25 | 10759922 |
| 26 | 24106882 |
| 27 | 27789878 |
| 28 | 37998938 |
| 29 | 60119912 |
| 30 | 113632822 |
| 31 | 187852862 |
| 32 | 335070838 |