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A218973
as a simple table
n
a(n)
0
1
1
1
2
1
3
2
4
6
5
4
6
23
7
16
8
122
9
109
10
551
11
570
12
4633
13
4224
[1,1,1,2,6,4,23,16,122,109,551,570,4633,4224]
