n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 12 |
4 | 46 |
5 | 177 |
6 | 684 |
7 | 2640 |
8 | 10180 |
9 | 39249 |
10 | 151326 |
11 | 583444 |
12 | 2249491 |
13 | 8673001 |
14 | 33439105 |
15 | 128925825 |
16 | 497078745 |
17 | 1916507251 |
18 | 7389171396 |
19 | 28489249854 |
20 | 109841457681 |
21 | 423498192724 |
22 | 1632814449360 |
23 | 6295382298780 |
24 | 24272101648369 |
[1,3,12,46,177,684,2640,10180,39249,151326,583444, 2249491,8673001,33439105,128925825,497078745, 1916507251,7389171396,28489249854,109841457681, 423498192724,1632814449360,6295382298780, 24272101648369] |