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) |
|---|---|
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 5 |
| 8 | 11 |
| 9 | 22 |
| 10 | 49 |
| 11 | 104 |
| 12 | 232 |
| 13 | 513 |
| 14 | 1159 |
| 15 | 2619 |
| 16 | 5989 |
| 17 | 13734 |
| 18 | 31729 |
| 19 | 73555 |
| 20 | 171377 |
| 21 | 400631 |
| 22 | 940104 |
| 23 | 2212542 |
| 24 | 5222932 |
| 25 | 12360976 |
| 26 | 29327260 |
| 27 | 69735757 |
| 28 | 166170966 |
| 29 | 396727768 |
| 30 | 948897250 |
| 31 | 2273409345 |
| 32 | 5455374972 |
| 33 | 13110384631 |
| 34 | 31550978034 |
| 35 | 76029236983 |
| 36 | 183437066950 |