n | a(n) |
---|---|
1 | 7 |
2 | 47 |
3 | 342 |
4 | 2754 |
5 | 24552 |
6 | 241128 |
7 | 2592720 |
8 | 30334320 |
9 | 383970240 |
10 | 5231113920 |
11 | 76349105280 |
12 | 1188825724800 |
13 | 19675048780800 |
[7,47,342,2754,24552,241128,2592720,30334320, 383970240,5231113920,76349105280,1188825724800, 19675048780800] |