n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 34 |
5 | 206 |
6 | 1486 |
7 | 12412 |
8 | 117692 |
9 | 1248004 |
10 | 14625856 |
11 | 187638716 |
12 | 2614602112 |
13 | 39310384192 |
14 | 634148436104 |
15 | 10923398137576 |
16 | 200069534481616 |
17 | 3882002527006352 |
18 | 79535575126745632 |
19 | 1715658099715217584 |
[1,1,2,7,34,206,1486,12412,117692,1248004, 14625856,187638716,2614602112,39310384192, 634148436104,10923398137576,200069534481616, 3882002527006352,79535575126745632, 1715658099715217584] |