n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 0 |
10 | 1 |
11 | 9 |
12 | 53 |
13 | 251 |
14 | 1043 |
15 | 3961 |
16 | 14102 |
17 | 47816 |
18 | 156129 |
19 | 494769 |
20 | 1530583 |
21 | 4642490 |
22 | 13853571 |
23 | 40779959 |
24 | 118666510 |
25 | 341938083 |
26 | 977028128 |
27 | 2771407719 |
28 | 7811504825 |
29 | 21895173627 |
30 | 61069528116 |
31 | 169590519864 |
32 | 469117076770 |
[0,0,0,0,0,0,0,0,0,1,9,53,251,1043,3961,14102, 47816,156129,494769,1530583,4642490,13853571, 40779959,118666510,341938083,977028128,2771407719, 7811504825,21895173627,61069528116,169590519864, 469117076770] |