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A093188
as a simple table
n
a(n)
1
0
2
0
3
5
4
49
5
356
6
2678
7
21085
8
166814
9
1345812
10
11080939
11
92699035
12
786630700
13
6757485506
[0,0,5,49,356,2678,21085,166814,1345812,11080939, 92699035,786630700,6757485506]