n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 33 |
4 | 480 |
5 | 11010 |
6 | 367560 |
7 | 16854390 |
8 | 1016930880 |
9 | 78124095000 |
10 | 7446314383200 |
11 | 862332613342200 |
12 | 119261328828364800 |
13 | 19415283189746043600 |
14 | 3675162134109650184000 |
15 | 800409618620667941886000 |
16 | 198730589981586780813696000 |
17 | 55800304882692417053710704000 |
[1,1,4,33,480,11010,367560,16854390,1016930880, 78124095000,7446314383200,862332613342200, 119261328828364800,19415283189746043600, 3675162134109650184000,800409618620667941886000, 198730589981586780813696000, 55800304882692417053710704000] |