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A316759
as a simple table
n
a(n)
1
0
2
3
3
4
4
410
5
26845
6
2605126
7
1169271436
8
947123604065
9
1765677169210138
[0,3,4,410,26845,2605126,1169271436,947123604065, 1765677169210138]