n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 13 |
5 | 93 |
6 | 569 |
7 | 3225 |
8 | 17498 |
9 | 92473 |
10 | 480626 |
11 | 2471344 |
12 | 12620821 |
13 | 64183465 |
14 | 325644870 |
15 | 1650517964 |
16 | 8364825118 |
17 | 42417264804 |
18 | 215318284778 |
19 | 1094490241371 |
20 | 5572229572248 |
21 | 28417811854263 |
22 | 145187463285629 |
23 | 743117432099859 |
24 | 3810434212170301 |
25 | 19573513999423879 |
26 | 100721431862571196 |
[0,0,0,1,13,93,569,3225,17498,92473,480626, 2471344,12620821,64183465,325644870,1650517964, 8364825118,42417264804,215318284778,1094490241371, 5572229572248,28417811854263,145187463285629, 743117432099859,3810434212170301, 19573513999423879,100721431862571196] |