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 | 20 |
3 | 4620 |
4 | 12697776 |
5 | 159845400 |
6 | 941432800 |
7 | 158800433792 |
8 | 1895312483064000 |
9 | 3438271897004237230080 |
10 | 933561026438040 |
11 | 2562849175892544 |
12 | 640904462719404383808000 |
13 | 1528364130975 |
14 | 2352733350786 |
15 | 959393282698730880000 |
16 | 6142080926952 |