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) |
|---|---|
| 6 | 1 |
| 7 | 0 |
| 8 | 1 |
| 9 | 3 |
| 10 | 5 |
| 11 | 9 |
| 12 | 27 |
| 13 | 67 |
| 14 | 198 |
| 15 | 646 |
| 16 | 2216 |
| 17 | 8178 |
| 18 | 32095 |
| 19 | 132093 |
| 20 | 568368 |
| 21 | 2541506 |
| 22 | 11762657 |
| 23 | 56183633 |
| 24 | 276288402 |
| 25 | 1396172601 |
| 26 | 7238931364 |