n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 7 |
5 | 18 |
6 | 60 |
7 | 196 |
8 | 704 |
9 | 2500 |
10 | 9189 |
11 | 33896 |
12 | 126759 |
13 | 476270 |
14 | 1802312 |
15 | 6849777 |
16 | 26152418 |
17 | 100203194 |
18 | 385221143 |
19 | 1485200848 |
20 | 5741256764 |
21 | 22245940545 |
22 | 86383382827 |
23 | 336093325058 |
24 | 1309998125640 |
25 | 5114451441106 |
26 | 19998172734786 |
27 | 78306011677182 |
28 | 307022182222506 |
29 | 1205243866707468 |
30 | 4736694001644862 |
[1,1,1,2,7,18,60,196,704,2500,9189,33896,126759, 476270,1802312,6849777,26152418,100203194, 385221143,1485200848,5741256764,22245940545, 86383382827,336093325058,1309998125640, 5114451441106,19998172734786,78306011677182, 307022182222506,1205243866707468,4736694001644862] |