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) |
|---|---|
| 3 | 24 |
| 4 | 77 |
| 5 | 178 |
| 6 | 373 |
| 7 | 724 |
| 8 | 1331 |
| 9 | 2364 |
| 10 | 4127 |
| 11 | 7186 |
| 12 | 12625 |
| 13 | 22558 |
| 14 | 41153 |
| 15 | 76680 |
| 16 | 145607 |
| 17 | 280792 |
| 18 | 547867 |
| 19 | 1078006 |
| 20 | 2133461 |
| 21 | 4238634 |
| 22 | 8442221 |
| 23 | 16841500 |
| 24 | 33630907 |
| 25 | 67199188 |
| 26 | 134323703 |
| 27 | 268559034 |
| 28 | 537014201 |
| 29 | 1073907094 |
| 30 | 2147673337 |
| 31 | 4295184016 |
| 32 | 8590181135 |