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 | 1 |
2 | 4 |
3 | 40 |
4 | 648 |
5 | 14560 |
6 | 418880 |
7 | 14696640 |
8 | 608608000 |
9 | 29056867840 |
10 | 1571364748800 |
11 | 94937979136000 |
12 | 6337884013260800 |
13 | 463301182536192000 |
14 | 36806315255277568000 |
15 | 3157533815406530560000 |
16 | 290912372128665391104000 |
17 | 28648563542097847828480000 |