n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 3 |
6 | 9 |
7 | 27 |
8 | 81 |
9 | 189 |
10 | 441 |
11 | 1029 |
12 | 2401 |
13 | 5145 |
14 | 11025 |
15 | 23625 |
16 | 50625 |
17 | 104625 |
18 | 216225 |
19 | 446865 |
20 | 923521 |
21 | 1876833 |
22 | 3814209 |
23 | 7751457 |
24 | 15752961 |
25 | 31755969 |
26 | 64016001 |
27 | 129048129 |
28 | 260144641 |
29 | 522337665 |
30 | 1048788225 |
31 | 2105834625 |
32 | 4228250625 |
33 | 8473082625 |
34 | 16979393025 |
35 | 34025371905 |
36 | 68184176641 |
[0,0,0,0,1,3,9,27,81,189,441,1029,2401,5145,11025, 23625,50625,104625,216225,446865,923521,1876833, 3814209,7751457,15752961,31755969,64016001, 129048129,260144641,522337665,1048788225, 2105834625,4228250625,8473082625,16979393025, 34025371905,68184176641] |