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 | 4 |
5 | 10 |
6 | 40 |
7 | 210 |
8 | 3024 |
9 | 25200 |
10 | 225000 |
11 | 2217600 |
12 | 29974560 |
13 | 400720320 |
14 | 5558957040 |
15 | 81340459200 |
16 | 1344965825280 |
17 | 23566775232000 |
18 | 432681781459200 |
19 | 8309927446329600 |
20 | 170258024427580800 |
21 | 3679448236206220800 |
22 | 83235946152090547200 |
23 | 1962840630226968307200 |