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) |
|---|---|
| 2 | 3 |
| 3 | 3 |
| 4 | 11 |
| 5 | 11 |
| 6 | 11 |
| 7 | 75 |
| 8 | 75 |
| 9 | 331 |
| 10 | 843 |
| 11 | 1867 |
| 12 | 3915 |
| 13 | 8011 |
| 14 | 16203 |
| 15 | 16203 |
| 16 | 16203 |
| 17 | 81739 |
| 18 | 212811 |
| 19 | 474955 |
| 20 | 474955 |
| 21 | 474955 |
| 22 | 2572107 |
| 23 | 6766411 |
| 24 | 6766411 |
| 25 | 23543627 |
| 26 | 57098059 |
| 27 | 57098059 |
| 28 | 57098059 |
| 29 | 57098059 |
| 30 | 593968971 |
| 31 | 1667710795 |
| 32 | 1667710795 |
| 33 | 1667710795 |
| 34 | 1667710795 |
| 35 | 18847579979 |