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 | 3 |
2 | 90 |
3 | 30240 |
4 | 123379200 |
5 | 6462306385920 |
6 | 4516376686991769600 |
7 | 43295772825884473845350400 |
8 | 5810971590951606258595918774272000 |
9 | 11092372326294974332542866301794421571584000 |