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) |
|---|---|
| 5 | 5 |
| 6 | 46 |
| 7 | 275 |
| 8 | 1283 |
| 9 | 5281 |
| 10 | 19607 |
| 11 | 68476 |
| 12 | 227196 |
| 13 | 727780 |
| 14 | 2263148 |
| 15 | 6881482 |
| 16 | 20529511 |
| 17 | 60312548 |
| 18 | 174870492 |
| 19 | 501443277 |
| 20 | 1424142358 |
| 21 | 4011274417 |
| 22 | 11216074419 |
| 23 | 31160837273 |
| 24 | 86078096135 |
| 25 | 236568911194 |
| 26 | 647181951619 |