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 | 2 |
3 | 12 |
4 | 144 |
5 | 1980 |
6 | 31680 |
7 | 630840 |
8 | 15093120 |
9 | 411883920 |
10 | 12607660800 |
11 | 430740858240 |
12 | 16265744732160 |
13 | 671629503504960 |
14 | 30093198326231040 |
15 | 1454898560062147200 |
16 | 75503612563771392000 |
17 | 4186035286381024876800 |
18 | 246916968958719605145600 |