n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 43 |
6 | 143 |
7 | 510 |
8 | 1936 |
9 | 7774 |
10 | 32848 |
11 | 145398 |
12 | 671641 |
13 | 3227218 |
14 | 16084747 |
15 | 82955090 |
16 | 441773793 |
17 | 2424845273 |
18 | 13695855478 |
19 | 79485625385 |
20 | 473393639992 |
21 | 2889930405750 |
22 | 18064609329598 |
23 | 115513453404597 |
24 | 754956282308784 |
25 | 5039064184597772 |
26 | 34323984497482559 |
[1,1,2,5,14,43,143,510,1936,7774,32848,145398, 671641,3227218,16084747,82955090,441773793, 2424845273,13695855478,79485625385,473393639992, 2889930405750,18064609329598,115513453404597, 754956282308784,5039064184597772, 34323984497482559] |