n | a(n) |
---|---|
1 | 2 |
2 | 11 |
3 | 38 |
4 | 136 |
5 | 496 |
6 | 1792 |
7 | 6440 |
8 | 23306 |
9 | 84180 |
10 | 303664 |
11 | 1096874 |
12 | 3960906 |
13 | 14299036 |
14 | 51633110 |
15 | 186437376 |
16 | 673147554 |
17 | 2430568646 |
18 | 8776143806 |
19 | 31687921122 |
20 | 114416191032 |
21 | 413124704992 |
22 | 1491673030176 |
23 | 5386005309890 |
24 | 19447328987316 |
[2,11,38,136,496,1792,6440,23306,84180,303664, 1096874,3960906,14299036,51633110,186437376, 673147554,2430568646,8776143806,31687921122, 114416191032,413124704992,1491673030176, 5386005309890,19447328987316] |