n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 25 |
5 | 77 |
6 | 256 |
7 | 854 |
8 | 2940 |
9 | 10229 |
10 | 36124 |
11 | 128745 |
12 | 463137 |
13 | 1677816 |
14 | 6118165 |
15 | 22432778 |
16 | 82660369 |
17 | 305916561 |
18 | 1136621136 |
19 | 4238006039 |
20 | 15852603939 |
21 | 59471304434 |
22 | 223704813807 |
23 | 843547443903 |
24 | 3188064830876 |
25 | 12074092672950 |
26 | 45816941923597 |
27 | 174173975322767 |
[1,1,3,8,25,77,256,854,2940,10229,36124,128745, 463137,1677816,6118165,22432778,82660369, 305916561,1136621136,4238006039,15852603939, 59471304434,223704813807,843547443903, 3188064830876,12074092672950,45816941923597, 174173975322767] |