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 | 720 |
2 | 262080 |
3 | 43243200 |
4 | 85765680 |
5 | 14366626560 |
6 | 27680637600 |
7 | 8916100427520 |
8 | 2871098559070560 |
9 | 5720836667515200 |
10 | 20123426048544000 |
11 | 924491486191094640 |
12 | 297683700627082714560 |