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 | 1 |
2 | 3 |
3 | 30 |
4 | 1680 |
5 | 900900 |
6 | 9535125600 |
7 | 4122929827336320 |
8 | 161481256755920962660800 |
9 | 1289130207153926967849156327590400 |
10 | 4850265693548396005370498087328884780717568000 |
11 | 20141097979706537636828034511787661382412368790843921121216000 |