n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 44 |
4 | 360 |
5 | 3152 |
6 | 28896 |
7 | 273856 |
8 | 2661504 |
9 | 26380544 |
10 | 265655808 |
11 | 2710244352 |
12 | 27952883712 |
13 | 290977271808 |
14 | 3053105307648 |
15 | 32256844087296 |
16 | 342870535471104 |
17 | 3664053076557824 |
18 | 39342496410894336 |
19 | 424243929700630528 |
20 | 4592400943255388160 |
21 | 49885822426526253056 |
[1,6,44,360,3152,28896,273856,2661504,26380544, 265655808,2710244352,27952883712,290977271808, 3053105307648,32256844087296,342870535471104, 3664053076557824,39342496410894336, 424243929700630528,4592400943255388160, 49885822426526253056] |