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 | 0 |
4 | 0 |
5 | 120 |
6 | 1800 |
7 | 21000 |
8 | 235200 |
9 | 2693880 |
10 | 34133400 |
11 | 509823600 |
12 | 9012207600 |
13 | 180053908320 |
14 | 3870208261920 |
15 | 87083930169600 |
16 | 2034907999488000 |
17 | 49491370609706880 |
18 | 1259740748821328640 |
19 | 33710658096392887680 |
20 | 949893399326820528000 |