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A098643
as a simple table
n
a(n)
1
0
2
0
3
1
4
0
5
0
6
2
7
0
8
0
9
6
10
0
11
0
12
52
13
0
14
0
15
1471
16
0
17
0
18
135029
19
0
20
0
21
41906834
22
0
23
0
24
45729175098
25
0
26
0
[0,0,1,0,0,2,0,0,6,0,0,52,0,0,1471,0,0,135029,0,0, 41906834,0,0,45729175098,0,0]