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 | 3 |
4 | 0 |
5 | 15 |
6 | 180 |
7 | 210 |
8 | 5040 |
9 | 51030 |
10 | 207900 |
11 | 3991680 |
12 | 42411600 |
13 | 356756400 |
14 | 6485398920 |
15 | 80635054500 |
16 | 1040690851200 |
17 | 19440077857200 |
18 | 291313362740400 |
19 | 4914773560897200 |
20 | 98182334033784000 |
21 | 1763213788027692000 |
22 | 35636304386103220800 |
23 | 778379605589616030000 |