n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 23 |
5 | 78 |
6 | 291 |
7 | 1126 |
8 | 4436 |
9 | 17910 |
10 | 73773 |
11 | 308188 |
12 | 1303402 |
13 | 5573133 |
14 | 24050795 |
15 | 104620985 |
16 | 458324429 |
17 | 2020417339 |
18 | 8956142180 |
19 | 39899217350 |
20 | 178549985024 |
21 | 802275736073 |
22 | 3618237414959 |
23 | 16373514195570 |
24 | 74325340129430 |
25 | 338356926399193 |
26 | 1544406450870590 |
[1,1,2,7,23,78,291,1126,4436,17910,73773,308188, 1303402,5573133,24050795,104620985,458324429, 2020417339,8956142180,39899217350,178549985024, 802275736073,3618237414959,16373514195570, 74325340129430,338356926399193,1544406450870590] |