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) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 56 |
| 3 | 360 |
| 4 | 2240 |
| 5 | 13696 |
| 6 | 82808 |
| 7 | 496656 |
| 8 | 2961136 |
| 9 | 17573608 |
| 10 | 103911424 |
| 11 | 612577272 |
| 12 | 3602222736 |
| 13 | 21137815952 |
| 14 | 123811421128 |
| 15 | 724064474968 |
| 16 | 4228582808424 |