n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 42 |
3 | 284 |
4 | 1938 |
5 | 13188 |
6 | 89828 |
7 | 611640 |
8 | 4165218 |
9 | 28363252 |
10 | 193145388 |
11 | 1315249800 |
12 | 8956413716 |
13 | 60990068520 |
14 | 415321615368 |
15 | 2828197518960 |
16 | 19259058052098 |
17 | 131147584691796 |
18 | 893070155862492 |
19 | 6081501856336488 |
20 | 41412945154765212 |
21 | 282007973308889592 |
[1,6,42,284,1938,13188,89828,611640,4165218, 28363252,193145388,1315249800,8956413716, 60990068520,415321615368,2828197518960, 19259058052098,131147584691796,893070155862492, 6081501856336488,41412945154765212, 282007973308889592] |