n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 12 |
3 | 39 |
4 | 147 |
5 | 498 |
6 | 1821 |
7 | 6303 |
8 | 22692 |
9 | 79419 |
10 | 283647 |
11 | 998418 |
12 | 3551241 |
13 | 12537003 |
14 | 44498172 |
15 | 157331199 |
16 | 557814747 |
17 | 1973795538 |
18 | 6994128261 |
19 | 24758288103 |
20 | 87705442452 |
21 | 310530035379 |
22 | 1099879017447 |
23 | 3894649335858 |
24 | 13793560492881 |
25 | 48845404515603 |
26 | 172987448951532 |
[1,3,12,39,147,498,1821,6303,22692,79419,283647, 998418,3551241,12537003,44498172,157331199, 557814747,1973795538,6994128261,24758288103, 87705442452,310530035379,1099879017447, 3894649335858,13793560492881,48845404515603, 172987448951532] |