n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 42 |
5 | 162 |
6 | 627 |
7 | 2431 |
8 | 9438 |
9 | 36686 |
10 | 142766 |
11 | 556206 |
12 | 2169268 |
13 | 8469060 |
14 | 33096195 |
15 | 129454695 |
16 | 506793270 |
17 | 1985612310 |
18 | 7785510810 |
19 | 30548406570 |
20 | 119944382220 |
21 | 471241577820 |
22 | 1852521913710 |
23 | 7286586193926 |
24 | 28675561428972 |
25 | 112905199767052 |
26 | 444752335104252 |
[1,1,3,11,42,162,627,2431,9438,36686,142766, 556206,2169268,8469060,33096195,129454695, 506793270,1985612310,7785510810,30548406570, 119944382220,471241577820,1852521913710, 7286586193926,28675561428972,112905199767052, 444752335104252] |