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 | 6 |
| 2 | 108 |
| 3 | 864 |
| 4 | 9072 |
| 5 | 85536 |
| 6 | 839808 |
| 7 | 8118144 |
| 8 | 78941952 |
| 9 | 765904896 |
| 10 | 7437339648 |
| 11 | 72196614144 |
| 12 | 700923912192 |
| 13 | 6804621582336 |
| 14 | 66060990332928 |
| 15 | 641332318961664 |
| 16 | 6226189565755392 |
| 17 | 60445100877152256 |
| 18 | 586813429630107648 |