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 | 4440 |
2 | 12715200 |
3 | 33158592000 |
4 | 84365452800000 |
5 | 213181366579200000 |
6 | 537634980016128000000 |
7 | 1355141067314135040000000 |
8 | 3415172150786516582400000000 |
9 | 8606389816065144913920000000000 |