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) |
|---|---|
| 8 | 1 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 12869 |
| 17 | 48618 |
| 18 | 87514 |
| 19 | 151162 |
| 20 | 251938 |
| 21 | 406978 |
| 22 | 639538 |
| 23 | 980626 |
| 24 | 9465511769 |
| 25 | 78873015651 |
| 26 | 432930149084 |
| 27 | 1733817767377 |
| 28 | 6029279272390 |
| 29 | 19272571329943 |
| 30 | 58176504195256 |
| 31 | 168427982998609 |
| 32 | 100010235685036911 |
| 33 | 1461261128736451029 |