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 | 72 |
| 2 | 194832 |
| 3 | 16791264 |
| 4 | 397928016 |
| 5 | 4629728880 |
| 6 | 34417220544 |
| 7 | 187488729792 |
| 8 | 814885857360 |
| 9 | 2975543305704 |
| 10 | 9486542953440 |
| 11 | 27052984412064 |
| 12 | 70486210291392 |
| 13 | 169931053729584 |
| 14 | 384163615285632 |