n | a(n) |
---|---|
0 | 6 |
1 | 21 |
2 | 126 |
3 | 846 |
4 | 5781 |
5 | 39606 |
6 | 271446 |
7 | 1860501 |
8 | 12752046 |
9 | 87403806 |
10 | 599074581 |
11 | 4106118246 |
12 | 28143753126 |
13 | 192900153621 |
14 | 1322157322206 |
15 | 9062201101806 |
16 | 62113250390421 |
17 | 425730551631126 |
18 | 2918000611027446 |
19 | 20000273725560981 |
[6,21,126,846,5781,39606,271446,1860501,12752046, 87403806,599074581,4106118246,28143753126, 192900153621,1322157322206,9062201101806, 62113250390421,425730551631126,2918000611027446, 20000273725560981] |