n | a(n) |
---|---|
2 | 0 |
3 | 0 |
4 | 6 |
5 | 32 |
6 | 190 |
7 | 1332 |
8 | 10654 |
9 | 95888 |
10 | 958878 |
11 | 10547660 |
12 | 126571918 |
13 | 1645434936 |
14 | 23036089102 |
15 | 345541336532 |
16 | 5528661384510 |
17 | 93987243536672 |
18 | 1691770383660094 |
19 | 32143637289541788 |
20 | 642872745790835758 |
21 | 13500327661607550920 |
22 | 297007208555366120238 |
23 | 6831165796773420765476 |
[0,0,6,32,190,1332,10654,95888,958878,10547660, 126571918,1645434936,23036089102,345541336532, 5528661384510,93987243536672,1691770383660094, 32143637289541788,642872745790835758, 13500327661607550920,297007208555366120238, 6831165796773420765476] |