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A159555
as a simple table
n
a(n)
1
1
2
6
3
22
4
72
5
114
6
148
7
164
8
260
9
261
10
780
11
1078
12
1184
13
1266
14
2952
15
4674
16
21868
[1,6,22,72,114,148,164,260,261,780,1078,1184,1266, 2952,4674,21868]