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A103547
as a simple table
n
a(n)
2
11
3
281
4
2267
5
26881
6
464447
7
6462667
8
0
9
0
10
0
11
0
12
0
13
0
14
0
15
0
16
0
17
0
18
0
[11,281,2267,26881,464447,6462667,0,0,0,0,0,0,0,0, 0,0,0]