n | a(n) |
---|---|
2 | 2 |
3 | 2 |
4 | 12 |
5 | 62 |
6 | 384 |
7 | 2574 |
8 | 20432 |
9 | 183790 |
10 | 1833102 |
11 | 20075568 |
12 | 240972780 |
13 | 3128714960 |
14 | 43794182164 |
15 | 656192916356 |
16 | 10493589363960 |
17 | 178319646743428 |
[2,2,12,62,384,2574,20432,183790,1833102,20075568, 240972780,3128714960,43794182164,656192916356, 10493589363960,178319646743428] |