n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 50 |
3 | 364 |
4 | 2688 |
5 | 20064 |
6 | 151008 |
7 | 1144000 |
8 | 8712704 |
9 | 66646528 |
10 | 511673344 |
11 | 3940579328 |
12 | 30429184000 |
13 | 235521884160 |
14 | 1826663915520 |
15 | 14192851599360 |
16 | 110453212446720 |
17 | 860819570688000 |
18 | 6717522904350720 |
19 | 52482715893104640 |
[1,7,50,364,2688,20064,151008,1144000,8712704, 66646528,511673344,3940579328,30429184000, 235521884160,1826663915520,14192851599360, 110453212446720,860819570688000,6717522904350720, 52482715893104640] |