n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 18 |
3 | 54 |
4 | 162 |
5 | 474 |
6 | 1398 |
7 | 4074 |
8 | 11898 |
9 | 34554 |
10 | 100302 |
11 | 290322 |
12 | 839382 |
13 | 2422626 |
14 | 6984342 |
15 | 20110806 |
16 | 57851358 |
17 | 166258242 |
18 | 477419658 |
19 | 1369878582 |
20 | 3927963138 |
21 | 11255743434 |
22 | 32235116502 |
23 | 92267490414 |
24 | 263968559874 |
25 | 754837708494 |
26 | 2157584748150 |
27 | 6164626128066 |
28 | 17606866229010 |
[1,6,18,54,162,474,1398,4074,11898,34554,100302, 290322,839382,2422626,6984342,20110806,57851358, 166258242,477419658,1369878582,3927963138, 11255743434,32235116502,92267490414,263968559874, 754837708494,2157584748150,6164626128066, 17606866229010] |