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A116079
as a simple table
n
a(n)
1
0
2
0
3
0
4
0
5
1
6
2
7
15
8
85
9
650
10
5800
11
65243
12
931258
13
17182237
14
414512599
15
13161989059
[0,0,0,0,1,2,15,85,650,5800,65243,931258,17182237, 414512599,13161989059]