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 | 0 |
2 | 0 |
3 | 6 |
4 | 0 |
5 | 60 |
6 | 1440 |
7 | 1680 |
8 | 100800 |
9 | 1905120 |
10 | 9979200 |
11 | 427109760 |
12 | 8103110400 |
13 | 102745843200 |
14 | 3926897694720 |
15 | 84531807360000 |
16 | 1844343928627200 |
17 | 69047821979136000 |
18 | 1790206583413248000 |
19 | 54550224714585600000 |
20 | 2112795340044060672000 |