n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 16 |
4 | 48 |
5 | 185 |
6 | 534 |
7 | 1873 |
8 | 5397 |
9 | 17853 |
10 | 51516 |
11 | 165882 |
12 | 480321 |
13 | 1519997 |
14 | 4419336 |
15 | 13827716 |
16 | 40372992 |
17 | 125335640 |
18 | 367166796 |
19 | 1133563870 |
20 | 3330422526 |
21 | 10238553681 |
22 | 30154137624 |
23 | 92399944682 |
24 | 272682432123 |
25 | 833404227103 |
26 | 2463640724667 |
[1,3,16,48,185,534,1873,5397,17853,51516,165882, 480321,1519997,4419336,13827716,40372992, 125335640,367166796,1133563870,3330422526, 10238553681,30154137624,92399944682,272682432123, 833404227103,2463640724667] |