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 | 1 |
3 | 2 |
4 | 12 |
5 | 360 |
6 | 86400 |
7 | 269568000 |
8 | 17662095360000 |
9 | 39345496591564800000 |
10 | 4820704671590339051520000000 |
11 | 52567343238846954009129910272000000000 |
12 | 82543717140049422917575408530662149324800000000000 |