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) |
|---|---|
| 7 | 1 |
| 8 | 3 |
| 9 | 14 |
| 10 | 39 |
| 11 | 134 |
| 12 | 362 |
| 13 | 1114 |
| 14 | 2974 |
| 15 | 8715 |
| 16 | 23192 |
| 17 | 66131 |
| 18 | 175889 |
| 19 | 493036 |
| 20 | 1311265 |
| 21 | 3633777 |
| 22 | 9664070 |
| 23 | 26564611 |
| 24 | 70644166 |
| 25 | 193023433 |
| 26 | 513251110 |
| 27 | 1395938840 |
| 28 | 3711196199 |
| 29 | 10057272214 |
| 30 | 26732694893 |
| 31 | 72234863272 |
| 32 | 191962874523 |
| 33 | 517473126631 |
| 34 | 1374873851835 |