n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 21 |
6 | 51 |
7 | 143 |
8 | 374 |
9 | 1071 |
10 | 3095 |
11 | 8934 |
12 | 26170 |
13 | 77812 |
14 | 239576 |
15 | 719583 |
16 | 2245728 |
17 | 7027771 |
18 | 21874554 |
19 | 68780246 |
20 | 217957471 |
21 | 699596665 |
22 | 2221050242 |
23 | 7204830752 |
24 | 23364983444 |
25 | 75490995551 |
26 | 245743450650 |
27 | 803146080439 |
28 | 2641243592039 |
29 | 8638752159115 |
30 | 28638848337491 |
31 | 94831340109958 |
32 | 313328526209055 |
[1,1,2,4,9,21,51,143,374,1071,3095,8934,26170, 77812,239576,719583,2245728,7027771,21874554, 68780246,217957471,699596665,2221050242, 7204830752,23364983444,75490995551,245743450650, 803146080439,2641243592039,8638752159115, 28638848337491,94831340109958,313328526209055] |