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 | 0 |
| 6 | 540 |
| 7 | 24646 |
| 8 | 108226 |
| 9 | 315281 |
| 10 | 734060 |
| 11 | 1477489 |
| 12 | 2682776 |
| 13 | 4511681 |
| 14 | 7150588 |
| 15 | 10810505 |
| 16 | 15727064 |
| 17 | 22160521 |
| 18 | 30395756 |
| 19 | 40742273 |
| 20 | 53534200 |
| 21 | 69130289 |
| 22 | 87913916 |
| 23 | 110293081 |