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A155308
as a simple table
n
a(n)
5
1
6
13
7
37
8
112
9
595
10
3710
11
30281
12
253489
13
2990675
14
42651723
15
721885534
16
15178835272
[1,13,37,112,595,3710,30281,253489,2990675, 42651723,721885534,15178835272]