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) |
|---|---|
| 1 | 16 |
| 2 | 2368 |
| 3 | 207496 |
| 4 | 15639936 |
| 5 | 1116199200 |
| 6 | 77643032832 |
| 7 | 5318859987584 |
| 8 | 360460090519552 |
| 9 | 24225364155392512 |
| 10 | 1617040095771160576 |
| 11 | 107318756823774554112 |
| 12 | 7087408485751290626048 |
| 13 | 466051677657117523779584 |
| 14 | 30530955397986792883159040 |
| 15 | 1993388935416599069605396480 |