n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 6 |
3 | 13 |
4 | 27 |
5 | 78 |
6 | 278 |
7 | 1011 |
8 | 3753 |
9 | 13843 |
10 | 50934 |
11 | 187629 |
12 | 692891 |
13 | 2568882 |
14 | 9562074 |
15 | 35742329 |
16 | 134117829 |
17 | 505093740 |
18 | 1908474674 |
19 | 7232842785 |
20 | 27486193251 |
21 | 104712247296 |
22 | 399816026490 |
23 | 1529742725403 |
24 | 5864036504705 |
25 | 22517947805343 |
26 | 86607583200294 |
27 | 333599771067256 |
[1,3,6,13,27,78,278,1011,3753,13843,50934,187629, 692891,2568882,9562074,35742329,134117829, 505093740,1908474674,7232842785,27486193251, 104712247296,399816026490,1529742725403, 5864036504705,22517947805343,86607583200294, 333599771067256] |