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 | 420 |
2 | 55440 |
3 | 23931600 |
4 | 142334216640 |
5 | 2137147184560080 |
6 | 4323341954766548553840 |
7 | 18705358317240372854759881380 |
8 | 1333577710124626249998068999458413600 |
9 | 248363720675646323338068819310182950300884320 |
10 | 4199805494977793853528867974891927438920668319491840 |