n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 23 |
4 | 171 |
5 | 1552 |
6 | 16583 |
7 | 203443 |
8 | 2813660 |
9 | 43258011 |
10 | 731183365 |
11 | 13466814110 |
12 | 268270250977 |
13 | 5744515120489 |
14 | 131525839441428 |
15 | 3205279987587275 |
16 | 82812074976214547 |
17 | 2260364854328771548 |
18 | 64979726427408468055 |
19 | 1961976154991285214707 |
20 | 62065551492895731512852 |
[1,1,4,23,171,1552,16583,203443,2813660,43258011, 731183365,13466814110,268270250977,5744515120489, 131525839441428,3205279987587275, 82812074976214547,2260364854328771548, 64979726427408468055,1961976154991285214707, 62065551492895731512852] |