n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 26 |
4 | 182 |
5 | 2170 |
6 | 45640 |
7 | 1728722 |
8 | 119663816 |
9 | 15307529470 |
10 | 3650708270236 |
11 | 1634796996516742 |
12 | 1382620288569817496 |
[1,2,6,26,182,2170,45640,1728722,119663816, 15307529470,3650708270236,1634796996516742, 1382620288569817496] |