n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 24 |
6 | 49 |
7 | 205 |
8 | 411 |
9 | 1668 |
10 | 5011 |
11 | 20095 |
12 | 40191 |
13 | 241372 |
14 | 482745 |
15 | 1931393 |
16 | 7725627 |
17 | 38629803 |
18 | 77259607 |
19 | 463562851 |
20 | 927125703 |
21 | 5562774334 |
22 | 22251097753 |
23 | 89004431205 |
24 | 178008862411 |
25 | 1424071142304 |
26 | 4272213426961 |
27 | 17088854190591 |
28 | 68355416767375 |
29 | 410132502535664 |
30 | 820265005071329 |
[1,1,3,7,24,49,205,411,1668,5011,20095,40191, 241372,482745,1931393,7725627,38629803,77259607, 463562851,927125703,5562774334,22251097753, 89004431205,178008862411,1424071142304, 4272213426961,17088854190591,68355416767375, 410132502535664,820265005071329] |