n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 16 |
5 | 95 |
6 | 666 |
7 | 5327 |
8 | 47944 |
9 | 479439 |
10 | 5273830 |
11 | 63285959 |
12 | 822717468 |
13 | 11518044551 |
14 | 172770668266 |
15 | 2764330692255 |
16 | 46993621768336 |
17 | 845885191830047 |
18 | 16071818644770894 |
19 | 321436372895417879 |
20 | 6750163830803775460 |
[0,1,3,16,95,666,5327,47944,479439,5273830, 63285959,822717468,11518044551,172770668266, 2764330692255,46993621768336,845885191830047, 16071818644770894,321436372895417879, 6750163830803775460] |